wiz vs whizz

wiz and whizz both are nouns.

Word	Noun	Adjective	Verb	Adverb
wiz	Yes	No	No	No
whizz	Yes	No	Yes	No

As nouns, wiz and whizz are synonyms defined as:

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

wiz (noun)	whizz (noun)
someone who is dazzlingly skilled in any field	someone who is dazzlingly skilled in any field

wiz (verb)	whizz (verb)
	move along very quickly
	make a soft swishing sound