lamenter vs bearer

lamenter and bearer both are nouns.

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

As nouns, bearer is a hyponym of lamenter; that is, bearer is a word with a more specific, narrower meaning than lamenter:

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

Other hyponyms of lamenter include pallbearer, wailer, weeper.

lamenter (noun)	bearer (noun)
a person who is feeling grief (as grieving over someone who has died)	a messenger who bears or presents
	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