dovetail joint vs mortise joint

dovetail joint and mortise joint both are nouns.

Word	Noun	Adjective	Verb	Adverb
dovetail joint	Yes	No	No	No
mortise joint	Yes	No	No	No

As nouns, mortise joint is a hypernym of dovetail joint; that is, mortise joint is a word with a broader meaning than dovetail joint:

dovetail joint: a mortise joint formed by interlocking tenons and mortises
mortise joint: a joint made by inserting tenon on one piece into mortise holes in the other

Other hypernyms of dovetail joint include mortise-and-tenon joint.

dovetail joint (noun)	mortise joint (noun)
a mortise joint formed by interlocking tenons and mortises	a joint made by inserting tenon on one piece into mortise holes in the other
	a gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus