whizz vs whiz

whizz and whiz both are nouns.

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

As nouns, whizz and whiz are synonyms defined as:

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

As verbs, whizz and whiz are synonyms defined as:

Other synonyms of whizz include birr, purr, whir, whirr.

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

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