firedrake vs mythical creature

firedrake and mythical creature both are nouns.

Word	Noun	Adjective	Verb	Adverb
firedrake	Yes	No	No	No
mythical creature	Yes	No	No	No

As nouns, mythical creature is a hypernym of firedrake; that is, mythical creature is a word with a broader meaning than firedrake:

firedrake: a creature of Teutonic mythology; usually represented as breathing fire and having a reptilian body and sometimes wings
mythical creature: a monster renowned in folklore and myth

Other hypernyms of firedrake include mythical monster.

firedrake (noun)	mythical creature (noun)
a creature of Teutonic mythology; usually represented as breathing fire and having a reptilian body and sometimes wings	a monster renowned in folklore and myth