Bloomsbury Group vs ingroup

Bloomsbury Group and ingroup both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bloomsbury Group	Yes	No	No	No
ingroup	Yes	No	No	No

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

Bloomsbury Group: an inner circle of writers and artists and philosophers who lived in or around Bloomsbury early in the 20th century and were noted for their unconventional lifestyles
ingroup: an exclusive circle of people with a common purpose

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

Bloomsbury Group (noun)	ingroup (noun)
an inner circle of writers and artists and philosophers who lived in or around Bloomsbury early in the 20th century and were noted for their unconventional lifestyles	an exclusive circle of people with a common purpose