civic center vs hub

civic center and hub both are nouns.

Word	Noun	Adjective	Verb	Adverb
civic center	Yes	No	No	No
hub	Yes	No	No	No

As nouns, hub is a hypernym of civic center; that is, hub is a word with a broader meaning than civic center:

civic center: the center of a city
hub: a center of activity or interest or commerce or transportation; a focal point around which events revolve

civic center (noun)	hub (noun)
a center where the members of a community can gather for social or cultural activities	the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes
the center of a city	a center of activity or interest or commerce or transportation; a focal point around which events revolve