hub vs civic center

hub and civic center both are nouns.

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

As nouns, civic center is a hyponym of hub; that is, civic center is a word with a more specific, narrower meaning than hub:

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

Other hyponyms of hub include down town, municipal center.

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