In IELTS, using vocabulary precisely is very important for getting a high score in lexical rescource. Affect and effect are often used incorrectly even by native speakers!
Lets look at the difference between these and how can they be used in a sentence accurately.
They are not exactly synonyms, they are homophones, which means they sound the same but are spelt differently. There are some exceptions when affect can be used as a verb or effect used as a noun, but generally speaking these are the rules below: