Which is correct between these twos?
And if both are correct, when is to use "in term of"? and when is to use "in terms of"?

Thanks in advance,Emotion: smile
"In terms of" is the common expression.

I can't think of a place where I'd use "in term of."

(Perhaps, "in a term of eight weeks etc.")
the correct is (in terms of) because it's an idiom not (s) for plural