circular saw vs buzz saw

circular saw and buzz saw both are nouns.

Word	Noun	Adjective	Verb	Adverb
circular saw	Yes	No	No	No
buzz saw	Yes	No	No	No

As nouns, circular saw and buzz saw are synonyms defined as:

circular saw and buzz saw: a power saw that has a steel disk with cutting teeth on the periphery; rotates on a spindle

circular saw (noun)	buzz saw (noun)
a power saw that has a steel disk with cutting teeth on the periphery; rotates on a spindle	a power saw that has a steel disk with cutting teeth on the periphery; rotates on a spindle