bucksaw vs saw

bucksaw and saw both are nouns.

Word	Noun	Adjective	Verb	Adverb
bucksaw	Yes	No	No	No
saw	Yes	No	Yes	No

As nouns, saw is a hypernym of bucksaw; that is, saw is a word with a broader meaning than bucksaw:

bucksaw: a saw that is set in a frame in the shape of an H; used with both hands to cut wood that is held in a sawbuck
saw: hand tool having a toothed blade for cutting

bucksaw (noun)	saw (noun)
a saw that is set in a frame in the shape of an H; used with both hands to cut wood that is held in a sawbuck	hand tool having a toothed blade for cutting
	a power tool for cutting wood
	a condensed but memorable saying embodying some important fact of experience that is taken as true by many people

bucksaw (verb)	saw (verb)
	cut with a saw