stunner vs sweetheart

stunner and sweetheart both are nouns.

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

As nouns, stunner and sweetheart are synonyms defined as:

Other synonyms of stunner include beauty, dish, knockout, looker, lulu, mantrap, peach, ravisher, smasher.

stunner (noun)	sweetheart (noun)
an unexpected and amazing event	a person loved by another person
a very attractive or seductive looking woman	a very attractive or seductive looking woman
	any well-liked individual
	a beloved person; used as terms of endearment

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