bee vs quilting bee

bee and quilting bee both are nouns.

Word	Noun	Adjective	Verb	Adverb
bee	Yes	No	No	No
quilting bee	Yes	No	No	No

As nouns, quilting bee is a hyponym of bee; that is, quilting bee is a word with a more specific, narrower meaning than bee:

bee: a social gathering to carry out some communal task or to hold competitions
quilting bee: a gathering to make quilts

Other hyponyms of bee include cornhusking, husking bee.

bee (noun)	quilting bee (noun)
any of numerous hairy-bodied insects including social and solitary species	a gathering to make quilts
a social gathering to carry out some communal task or to hold competitions