Oberson vs fairy

Oberson and fairy both are nouns.

Word	Noun	Adjective	Verb	Adverb
Oberson	Yes	No	No	No
fairy	Yes	No	No	No

As nouns, fairy is a hypernym of Oberson; that is, fairy is a word with a broader meaning than Oberson:

Oberson: (Middle Ages) the king of the fairies and husband of Titania in medieval folklore
fairy: a small being, human in form, playful and having magical powers

Other hypernyms of Oberson include faerie, faery, fay, sprite.

Oberson (noun)	fairy (noun)
(Middle Ages) the king of the fairies and husband of Titania in medieval folklore	a small being, human in form, playful and having magical powers
	offensive term for a homosexual man