sect vs ingroup

sect and ingroup both are nouns.

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

As nouns, ingroup is a hypernym of sect; that is, ingroup is a word with a broader meaning than sect:

Other hypernyms of sect include camp, clique, coterie, inner circle, pack.

sect (noun)	ingroup (noun)
a dissenting clique	an exclusive circle of people with a common purpose
a subdivision of a larger religious group