marimba vs xylophone

marimba and xylophone both are nouns.

Word	Noun	Adjective	Verb	Adverb
marimba	Yes	No	No	No
xylophone	Yes	No	No	No

As nouns, marimba and xylophone are synonyms defined as:

marimba and xylophone: a percussion instrument with wooden bars tuned to produce a chromatic scale and with resonators; played with small mallets

marimba (noun)	xylophone (noun)
a percussion instrument with wooden bars tuned to produce a chromatic scale and with resonators; played with small mallets	a percussion instrument with wooden bars tuned to produce a chromatic scale and with resonators; played with small mallets