athletics vs offside

athletics and offside both are nouns.

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

athletics (noun)	offside (noun)
an active diversion requiring physical exertion and competition	(sport) the mistake of occupying an illegal position on the playing field (in football, soccer, ice hockey, field hockey, etc.)
participation in sports events as an extracurricular activity
a contest between athletes

athletics (adjective)	offside (adjective)
	illegally beyond a prescribed line or area or ahead of the ball or puck

athletics (adverb)	offside (adverb)
	illegally in advance of the ball or puck