backsaw vs dovetail saw

backsaw and dovetail saw both are nouns.

Word	Noun	Adjective	Verb	Adverb
backsaw	Yes	No	No	No
dovetail saw	Yes	No	No	No

As nouns, dovetail saw is a hyponym of backsaw; that is, dovetail saw is a word with a more specific, narrower meaning than backsaw:

backsaw: a handsaw that is stiffened by metal reinforcement along the upper edge
dovetail saw: a small backsaw used to cut dovetails.

backsaw (noun)	dovetail saw (noun)
a handsaw that is stiffened by metal reinforcement along the upper edge	a small backsaw used to cut dovetails.