suburbia vs subculture

suburbia and subculture both are nouns.

Word	Noun	Adjective	Verb	Adverb
suburbia	Yes	No	No	No
subculture	Yes	No	No	No

As nouns, subculture is a hypernym of suburbia; that is, subculture is a word with a broader meaning than suburbia:

suburbia: suburbanites considered as a cultural class or subculture
subculture: a social group within a national culture that has distinctive patterns of behavior and beliefs

suburbia (noun)	subculture (noun)
suburbanites considered as a cultural class or subculture	a social group within a national culture that has distinctive patterns of behavior and beliefs
a residential district located on the outskirts of a city