dovetail vs mortise joint

dovetail and mortise joint both are nouns.

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

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

dovetail: 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 include mortise-and-tenon joint.

dovetail (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

dovetail (verb)	mortise joint (verb)
fit together tightly, as if by means of a dovetail