track star vs whiz

track star and whiz both are nouns.

Word	Noun	Adjective	Verb	Adverb
track star	Yes	No	No	No
whiz	Yes	No	Yes	No

As nouns, whiz is a hypernym of track star; that is, whiz is a word with a broader meaning than track star:

Other hypernyms of track star include ace, adept, champion, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whizz, wiz, wizard.

track star (noun)	whiz (noun)
a star runner	a buzzing or hissing sound as of something traveling rapidly through the air
	someone who is dazzlingly skilled in any field

track star (verb)	whiz (verb)
	make a soft swishing sound