grandstand vs grandstander

grandstand and grandstander both are nouns.

Word	Noun	Adjective	Verb	Adverb
grandstand	Yes	No	Yes	No
grandstander	Yes	No	No	No

grandstand (noun)	grandstander (noun)
a stand at a racecourse or stadium consisting of tiers with rows of individual seats that are under a protective roof	someone who performs with an eye to the applause from spectators in the grandstand
the audience at a stadium or racetrack

grandstand (verb)	grandstander (verb)
perform ostentatiously in order to impress the audience and with an eye to the applause