sympathize with vs pity

sympathize with is not a noun while pity is a noun.

Word	Noun	Adjective	Verb	Adverb
sympathize with	No	No	Yes	No
pity	Yes	No	Yes	No

As verbs, sympathize with and pity are synonyms defined as:

Other synonyms of sympathize with include compassionate, condole with, feel for.

sympathize with (noun)	pity (noun)
	the humane quality of understanding the suffering of others and wanting to do something about it
	an unfortunate development
	a feeling of sympathy and sorrow for the misfortunes of others

sympathize with (verb)	pity (verb)
share the suffering of	share the suffering of