oldtimer vs stager

oldtimer and stager both are nouns.

Word	Noun	Adjective	Verb	Adverb
oldtimer	Yes	No	No	No
stager	Yes	No	No	No

As nouns, oldtimer and stager are synonyms defined as:

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

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

oldtimer (noun)	stager (noun)
an elderly man	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	an experienced person who has been through many battles; someone who has given long service