bearer vs griever

bearer and griever both are nouns.

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

As nouns, griever is a hypernym of bearer; that is, griever is a word with a broader meaning than bearer:

bearer: one of the mourners carrying the coffin at a funeral
griever: a person who is feeling grief (as grieving over someone who has died)

Other hypernyms of bearer include lamenter, mourner, sorrower.

bearer (noun)	griever (noun)
a messenger who bears or presents	a person who is feeling grief (as grieving over someone who has died)
one of the mourners carrying the coffin at a funeral
the person who is in possession of a check or note or bond or document of title that is endorsed to him or to whoever holds it
someone whose employment involves carrying something