snow thrower vs snow blower

snow thrower and snow blower both are nouns.

Word	Noun	Adjective	Verb	Adverb
snow thrower	Yes	No	No	No
snow blower	Yes	No	No	No

As nouns, snow thrower and snow blower are synonyms defined as:

snow thrower and snow blower: a machine that removes snow by scooping it up and throwing it forcefully through a chute

snow thrower (noun)	snow blower (noun)
a machine that removes snow by scooping it up and throwing it forcefully through a chute	a machine that removes snow by scooping it up and throwing it forcefully through a chute