scroll saw vs power saw

scroll saw and power saw both are nouns.

Word	Noun	Adjective	Verb	Adverb
scroll saw	Yes	No	No	No
power saw	Yes	No	No	No

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

scroll saw: fine-toothed power saw with a narrow blade; used to cut curved outlines
power saw: a power tool for cutting wood

Other hypernyms of scroll saw include saw, sawing machine.

scroll saw (noun)	power saw (noun)
fine-toothed power saw with a narrow blade; used to cut curved outlines	a power tool for cutting wood