affect

Affect is a verb:

How will this new law affect me?

effect

Effect is a noun:

What will the effect of the new law be?

already

Already is an adverb. If something has already happened, it has happened before the present time:

I've already called an ambulance.

all ready

In the phrase all ready, all is a quantifier meaning the whole of a group or a thing, and ready is an adjective:

Are you all ready to go?

alter

Alter is a verb, meaning 'to change':

Nothing in the house had altered since 1960.

altar

An altar is the holy table in a church:

The priest stood in front of the altar.

aural

Aural means 'connected with your ears and your sense of hearing':

We had an aural test in music.

oral

Oral means 'relating to your mouth'. It also describes things that involve speaking rather than listening:

We do a lot of oral work in Spanish.

bare

Bare is an adjective meaning 'not covered' or 'not wearing any clothes':

We ran along the beach with bare feet.

bear

A bear is a wild animal:

There are bears in the woods.

Bear is also a verb: I can't bear spiders.

base

The base of something is its lowest edge or part:

I had a pain in the base of my spine.

bass

A bass is a male singer who can sing very low notes. Bass instruments play low notes:

She plays bass guitar.

board

A board is a flat piece of wood:

They nailed a board over the window.

bored

If you are bored, you are not interested by something:

I was so bored at school today.

break

If you break something or if it breaks, it divides into two or more pieces, often as the result of an accident:

He fell through the window, breaking the glass.

brake

A brake is a device on a vehicle that makes it slow down or stop. Brake is also a verb:

He took his foot off the brake. The driver braked suddenly.

coarse

Coarse is an adjective meaning 'having a rough texture' or talking and behaving in a rude way': The sand was very coarse. His manners are coarse.

course

Course is a noun with several meanings, including 'a series of lessons' and 'a route or path':

The plane changed course. I did a course in art history.

compliment

A compliment is a nice thing that someone says about someone or something. Compliment can also be used as a verb:

They paid him a lot of compliments. She complimented me on my roses.

complement

If people or things complement each other, they have different qualities that go well together:

The dry wine complements this rich dish perfectly.

counsellor

A counsellor gives people advice, often on personal matters, such as relationships and jobs:

They went to see a marriage counsellor.

councillor

A councillor is an official in a local council:

She was elected as a councillor last year.

current

A current is the flowing movement of water, for example in a river:

There is a strong current here.

Current is also an adjective which describes things that are happening or existing now:

Our current methods of production are too expensive.

currant

A currant is a small, dried grape:

I put currants in the cakes.

dependent

Dependent is an adjective.

If you are dependent on someone or something, you rely on them:

Their economy is very dependent on oil.

dependant

Dependant is a noun. Your dependants are the people you are financially responsible for:

He has a large income and no dependants.

discreet

If you are discreet, you are careful to avoid attracting attention or revealing private information:

I made a few discreet inquiries about her.

discrete

If things are discrete, they are not joined or connected in any way:

I met him on three discrete occasions.

draft

A draft of a piece of writing is a first, rough version of it:

He showed me the first draft of his story.

draught

A draught is a current of air:

There's a draught coming in through that window.

Note that in US English, this is spelled ’draft’.

draw

Draw is a verb meaning 'to make a picture with a pencil':

Shall we draw a picture?

drawer

A drawer's part of a desk, cupboard, etc.:

I put the papers away in a drawer.

ensure

In UK English, ensure means 'to make certain that something happens'.

In US English, the word is usually spelled insure: Please ensure your phones are switched off

insure

If you insure something, you pay money to a company so that if it is lost, stolen, or damaged, the company will pay you a sum of money: Insure your baggage before you leave home.

hole

A hole is an opening or a hollow space in something:

There’s a hole in my shoe.

whole

Whole is a quantifier meaning 'all of something':

He ate the whole loaf

led

Led is the past participle of the verb 'lead':

He led me into a small room.

lead

Lead is a noun, meaning 'a soft, grey metal':

The roof is covered with lead.

Lead is also a verb, but it has a different pronunciation.

licence

Licence is a noun:

I showed him my driving licence.

license

License is a verb: We are not licensed to serve alcohol.

Note that in US English, licence is used for the verb and the noun.

practice

Practice is a noun;

I did my piano practice.

practise

Practise is a verb: I practised the piano.

Note that in US English, practice is used for the verb and the noun.

principle

Principle is a noun meaning 'a belief about what is right or wrong' or 'a basic rule':

Eating meat is against my principles. We learned the basic principles of yoga.

principal

Principal is an adjective meaning ’most important’:

Bad weather was the principal reason for the failure of the expedition.

Principal can also be a noun meaning 'the person in charge of a school or college':

She was sent to the principal's office.

role

Your role is your position and what you do in a situation or society: His role was to check the tickets. A role is also one of the characters that an actor plays: She played the role of Ophelia.

roll

A roll is a small, round loaf of bread:

I had a cheese roll for lunch. A roll of something, such as cloth or paper, is a long piece of it wrapped many times around itself or around a tube:

A bought a roll of wallpaper.

site

A site is an area that is used fora particular purpose or where something happens:

He works on a building site. This is the site of the explosion.

sight

Sight is the ability to see, and a sight is something you can see:

She lost her sight in an accident. I faint at the sight of blood.

stationery

Stationery is a noun meaning 'paper, envelopes, and writing equipment':

Envelopes are kept in the stationery cupboard.

stationary

Stationary is an adjective meaning 'not moving': I drove into a stationary vehicle.

story

A story is something you read in a book:

I bought a book of fairy stories.

storey

A storey is a level of a building:

My office is in a six storey building.

whether

Whether is a conjunction used to talk about a choice or doubt between two or more alternatives:

I can't decide whether to have soup or salad.

weather

Weather is a noun we use to talk about rain, snow, sun, etc.:

The weather was great in Portugal.

witch

Witch is a noun, meaning an evil magic woman': We painted a witch on a broomstick.

which

Which is a pronoun and a determiner used to ask questions when there are two or more possible alternatives, or to talk about things connected to a particular person:

Which is your cabin? I took the coat which looked warmest.