whiz vs mavin

whiz and mavin both are nouns.

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

As nouns, whiz and mavin are synonyms defined as:

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

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

whiz (verb)	mavin (verb)
make a soft swishing sound