aquatics vs athletics

aquatics and athletics both are nouns.

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

As nouns, athletics is a hypernym of aquatics; that is, athletics is a word with a broader meaning than aquatics:

Other hypernyms of aquatics include sport.

aquatics (noun)	athletics (noun)
sports that involve bodies of water	an active diversion requiring physical exertion and competition
	participation in sports events as an extracurricular activity
	a contest between athletes