fiend vs dybbuk

fiend and dybbuk both are nouns.

Word	Noun	Adjective	Verb	Adverb
fiend	Yes	No	No	No
dybbuk	Yes	No	No	No

As nouns, dybbuk is a hyponym of fiend; that is, dybbuk is a word with a more specific, narrower meaning than fiend:

fiend: an evil supernatural being
dybbuk: (Jewish folklore) a demon that enters the body of a living person and controls that body's behavior

Other hyponyms of fiend include incubus, succuba, succubus, dibbuk.

fiend (noun)	dybbuk (noun)
a cruel wicked and inhuman person	(Jewish folklore) a demon that enters the body of a living person and controls that body's behavior
a person motivated by irrational enthusiasm (as for a cause)
an evil supernatural being