1.“ Affect “ is usually a verb whereas “ effect “ is usually a noun .
Examples –
The weather can affect your mood.
The effect of the medicine was immediate .
2. “ Affect “ means to influence or change whereas “ effect “ means the result or outcome of change .
Affect = Action
Effect = Result
3.The adjective form of affect is affected whereas the adjective form of effect is effective .
4. Affect is the cause whereas effect is the result .
5. You affect something first and it creates an effect later on .
6.. The synonyms of affect are Influence , change , alter , modify etc .
The synonyms of effect are result , outcome , consequence , impact etc .