fiend vs daimon

fiend and daimon both are nouns.

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

As nouns, fiend and daimon are synonyms defined as:

Other synonyms of fiend include daemon, demon, devil.

fiend (noun)	daimon (noun)
a cruel wicked and inhuman person	an evil supernatural being
a person motivated by irrational enthusiasm (as for a cause)
an evil supernatural being