athletics vs overhand

athletics is a noun but overhand is not a noun.

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

athletics (noun)	overhand (noun)
an active diversion requiring physical exertion and competition
participation in sports events as an extracurricular activity
a contest between athletes

athletics (adjective)	overhand (adjective)
	with hand brought forward and down from above shoulder level
	sewn together with overhand stitches (close vertical stitches that pass over and draw the two edges together)