remembrance vs epitaph

remembrance and epitaph both are nouns.

Word	Noun	Adjective	Verb	Adverb
remembrance	Yes	No	No	No
epitaph	Yes	No	No	No

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

Other hyponyms of remembrance include festschrift.

remembrance (noun)	epitaph (noun)
the ability to recall past occurrences	an inscription on a tombstone or monument in memory of the person buried there
a recognition of meritorious service	a summary statement of commemoration for a dead person