athletics vs ski jump

athletics and ski jump both are nouns.

Word	Noun	Adjective	Verb	Adverb
athletics	Yes	No	No	No
ski jump	Yes	No	Yes	No

athletics (noun)	ski jump (noun)
an active diversion requiring physical exertion and competition	a steep downward ramp from which skiers jump
participation in sports events as an extracurricular activity
a contest between athletes

athletics (verb)	ski jump (verb)
	jump on skis