bourgeoisie vs social class

bourgeoisie and social class both are nouns.

Word	Noun	Adjective	Verb	Adverb
bourgeoisie	Yes	No	No	No
social class	Yes	No	No	No

As nouns, social class is a hypernym of bourgeoisie; that is, social class is a word with a broader meaning than bourgeoisie:

bourgeoisie: the social class between the lower and upper classes
social class: people having the same social, economic, or educational status

Other hypernyms of bourgeoisie include class, socio-economic class, stratum.

bourgeoisie (noun)	social class (noun)
the social class between the lower and upper classes	people having the same social, economic, or educational status