old hand vs stager

old hand and stager both are nouns.

Word	Noun	Adjective	Verb	Adverb
old hand	Yes	No	No	No
stager	Yes	No	No	No

As nouns, old hand and stager are synonyms defined as:

old hand and stager: an experienced person who has been through many battles; someone who has given long service

Other synonyms of old hand include old-timer, old stager, oldtimer, veteran, warhorse.

old hand (noun)	stager (noun)
an experienced person who has been through many battles; someone who has given long service	someone who supervises the physical aspects in the production of a show and who is in charge of the stage when the show is being performed
	an experienced person who has been through many battles; someone who has given long service