Very Confusing Words!
Some words sound the same but mean different things and are often spelled differently to. These special words are called Homophones.
Homo means 'same'
Phone means 'sound'
So literally, homophone means same sound.
Common Confusions
They're (shortened form) - They're is a shorter way to say they are.
Their (ownership) - It was their dog that bit the postman.
There (Where? There) - The children should sit over there.