griever vs sorrower

griever and sorrower both are nouns.

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

As nouns, griever and sorrower are synonyms defined as:

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

Other synonyms of griever include lamenter, mourner.

griever (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)