scissortail vs tyrant bird

scissortail and tyrant bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
scissortail	Yes	No	No	No
tyrant bird	Yes	No	No	No

As nouns, tyrant bird is a hypernym of scissortail; that is, tyrant bird is a word with a broader meaning than scissortail:

scissortail: grey flycatcher of the southwestern United States and Mexico and Central America having a long forked tail and white breast and salmon and scarlet markings
tyrant bird: large American birds that characteristically catch insects on the wing

Other hypernyms of scissortail include flycatcher, New World flycatcher, tyrant flycatcher.

scissortail (noun)	tyrant bird (noun)
grey flycatcher of the southwestern United States and Mexico and Central America having a long forked tail and white breast and salmon and scarlet markings	large American birds that characteristically catch insects on the wing