deary vs sweetheart

deary and sweetheart both are nouns.

Word	Noun	Adjective	Verb	Adverb
deary	Yes	No	No	No
sweetheart	Yes	Yes	No	No

As nouns, deary and sweetheart are synonyms defined as:

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

deary (noun)	sweetheart (noun)
a special loved one	a person loved by another person
a beloved person; used as terms of endearment	a very attractive or seductive looking woman
	any well-liked individual
	a beloved person; used as terms of endearment

deary (adjective)	sweetheart (adjective)
	privileged treatment of a favored person or corporation (sometimes unethically)