coterie vs ingroup

coterie and ingroup both are nouns.

Word	Noun	Adjective	Verb	Adverb
coterie	Yes	No	No	No
ingroup	Yes	No	No	No

As nouns, coterie and ingroup are synonyms defined as:

coterie and ingroup: an exclusive circle of people with a common purpose

Other synonyms of coterie include camp, clique, inner circle, pack.

coterie (noun)	ingroup (noun)
an exclusive circle of people with a common purpose	an exclusive circle of people with a common purpose