sweetie vs darling

sweetie and darling both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweetie	Yes	No	No	No
darling	Yes	Yes	No	No

As nouns, sweetie and darling are synonyms defined as:

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

sweetie (noun)	darling (noun)
a person loved by another person	a special loved one
a beloved person; used as terms of endearment	a beloved person; used as terms of endearment

sweetie (adjective)	darling (adjective)
	dearly loved