dearest vs beloved

dearest and beloved both are nouns.

Word	Noun	Adjective	Verb	Adverb
dearest	Yes	No	No	No
beloved	Yes	Yes	No	No

As nouns, dearest and beloved are synonyms defined as:

Other synonyms of dearest include baby, darling, dear, dearie, deary, honey, love, sweetheart, sweetie.

dearest (noun)	beloved (noun)
a beloved person; used as terms of endearment	a beloved person; used as terms of endearment

dearest (adjective)	beloved (adjective)
	dearly loved