agree vs fit in

agree and fit in both are verbs.

Word	Noun	Adjective	Verb	Adverb
agree	No	No	Yes	No
fit in	No	No	Yes	No

As verbs, fit in is a hyponym of agree; that is, fit in is a word with a more specific, narrower meaning than agree:

agree: be compatible, similar or consistent; coincide in their characteristics
fit in: go together

As verbs, agree and fit in are synonyms defined as:

Other synonyms of agree include accord, concord, consort, harmonise, harmonize.

agree (verb)	fit in (verb)
be in accord; be in agreement	go together
consent or assent to a condition, or agree to do something
achieve harmony of opinion, feeling, or purpose
be agreeable or suitable
be compatible, similar or consistent; coincide in their characteristics
go together
show grammatical agreement