mountaineer vs athletics

mountaineer and athletics both are nouns.

Word	Noun	Adjective	Verb	Adverb
mountaineer	Yes	No	Yes	No
athletics	Yes	No	No	No

mountaineer (noun)	athletics (noun)
someone who climbs mountains	an active diversion requiring physical exertion and competition
	participation in sports events as an extracurricular activity
	a contest between athletes

mountaineer (verb)	athletics (verb)
climb mountains for pleasure as a sport