whiz vs ace

whiz and ace both are nouns.

Word	Noun	Adjective	Verb	Adverb
whiz	Yes	No	Yes	No
ace	Yes	Yes	Yes	No

As nouns, whiz and ace are synonyms defined as:

Other synonyms of whiz include adept, champion, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whizz, wiz, wizard.

whiz (noun)	ace (noun)
a buzzing or hissing sound as of something traveling rapidly through the air	a serve that the receiver is unable to reach
someone who is dazzlingly skilled in any field	one of four playing cards in a deck having a single pip on its face
	someone who is dazzlingly skilled in any field
	the smallest whole number or a numeral representing this number

whiz (adjective)	ace (adjective)
	of the highest quality