lamenter vs sorrower

lamenter and sorrower both are nouns.

Word	Noun	Adjective	Verb	Adverb
lamenter	Yes	No	No	No
sorrower	Yes	No	No	No

As nouns, lamenter and sorrower are synonyms defined as:

lamenter and sorrower: a person who is feeling grief (as grieving over someone who has died)

Other synonyms of lamenter include griever, mourner.

lamenter (noun)	sorrower (noun)
a person who is feeling grief (as grieving over someone who has died)	a person who is feeling grief (as grieving over someone who has died)