hobbit vs imaginary being

hobbit and imaginary being both are nouns.

Word	Noun	Adjective	Verb	Adverb
hobbit	Yes	No	No	No
imaginary being	Yes	No	No	No

As nouns, imaginary being is a hypernym of hobbit; that is, imaginary being is a word with a broader meaning than hobbit:

hobbit: an imaginary being similar to a person but smaller and with hairy feet; invented by J.R.R. Tolkien
imaginary being: a creature of the imagination; a person that exists only in legends or myths or fiction

Other hypernyms of hobbit include imaginary creature.

hobbit (noun)	imaginary being (noun)
an imaginary being similar to a person but smaller and with hairy feet; invented by J.R.R. Tolkien	a creature of the imagination; a person that exists only in legends or myths or fiction