smasher vs sweetheart

smasher and sweetheart both are nouns.

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

As nouns, smasher and sweetheart are synonyms defined as:

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

smasher (noun)	sweetheart (noun)
a conspicuous success	a person loved by another person
a very attractive or seductive looking woman	a very attractive or seductive looking woman
a person who smashes something	any well-liked individual
	a beloved person; used as terms of endearment

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