dragon vs unpleasant woman

dragon and unpleasant woman both are nouns.

Word	Noun	Adjective	Verb	Adverb
dragon	Yes	No	No	No
unpleasant woman	Yes	No	No	No

As nouns, unpleasant woman is a hypernym of dragon; that is, unpleasant woman is a word with a broader meaning than dragon:

Other hypernyms of dragon include disagreeable woman.

dragon (noun)	unpleasant woman (noun)
any of several small tropical Asian lizards capable of gliding by spreading winglike membranes on each side of the body	a woman who is an unpleasant person
a fiercely vigilant and unpleasant woman
a creature of Teutonic mythology; usually represented as breathing fire and having a reptilian body and sometimes wings