Generally
speaking, affect is a verb and effect is a noun, but there are times when
effect can be a noun. Here are some examples:
Affect –
to change or alter something. Kamala Harris affected the results of the first
Democratic debate when she went head-to-head with Joe Biden on busing. That
medication affects Jim; he's going to go off it.
Effect –
the end result or consequence. The side effect of that drug was miserable. The
effect of all my studying was that I got an A- on my final.
So when
is effect a verb? To effect means to make happen, but it is not used that often
as a verb. By and large, you can consider affect to be a verb and effect to be
a noun.
Happy
writing.
Sigrid