palimpsest vs manuscript

palimpsest and manuscript both are nouns.

Word	Noun	Adjective	Verb	Adverb
palimpsest	Yes	No	No	No
manuscript	Yes	No	No	No

As nouns, manuscript is a hypernym of palimpsest; that is, manuscript is a word with a broader meaning than palimpsest:

palimpsest: a manuscript (usually written on papyrus or parchment) on which more than one text has been written with the earlier writing incompletely erased and still visible
manuscript: handwritten book or document

Other hypernyms of palimpsest include holograph.

palimpsest (noun)	manuscript (noun)
a manuscript (usually written on papyrus or parchment) on which more than one text has been written with the earlier writing incompletely erased and still visible	the form of a literary work submitted for publication
	handwritten book or document