wage concession vs concession

wage concession and concession both are nouns.

Word	Noun	Adjective	Verb	Adverb
wage concession	Yes	No	No	No
concession	Yes	No	No	No

As nouns, concession is a hypernym of wage concession; that is, concession is a word with a broader meaning than wage concession:

wage concession (noun)	concession (noun)
an agreement to raise wages	a contract granting the right to operate a subsidiary business
	a point conceded or yielded
	the act of conceding or yielding