hand organ vs grind organ

hand organ and grind organ both are nouns.

Word	Noun	Adjective	Verb	Adverb
hand organ	Yes	No	No	No
grind organ	Yes	No	No	No

As nouns, hand organ and grind organ are synonyms defined as:

hand organ and grind organ: a musical instrument that makes music by rotation of a cylinder studded with pegs

Other synonyms of hand organ include barrel organ.

hand organ (noun)	grind organ (noun)
a musical instrument that makes music by rotation of a cylinder studded with pegs	a musical instrument that makes music by rotation of a cylinder studded with pegs