state bank vs banking concern

state bank and banking concern both are nouns.

Word	Noun	Adjective	Verb	Adverb
state bank	Yes	No	No	No
banking concern	Yes	No	No	No

As nouns, banking concern is a hypernym of state bank; that is, banking concern is a word with a broader meaning than state bank:

state bank: a bank chartered by a state rather than by the federal government
banking concern: a financial institution that accepts deposits and channels the money into lending activities

Other hypernyms of state bank include bank, banking company, depository financial institution.

state bank (noun)	banking concern (noun)
a bank chartered by a state rather than by the federal government	a financial institution that accepts deposits and channels the money into lending activities