harmonium vs reed organ

harmonium and reed organ both are nouns.

Word	Noun	Adjective	Verb	Adverb
harmonium	Yes	No	No	No
reed organ	Yes	No	No	No

As nouns, harmonium and reed organ are synonyms defined as:

harmonium and reed organ: a free-reeded instrument with a piano keyboard in which air is forced through the reeds by bellows

Other synonyms of harmonium include organ.

harmonium (noun)	reed organ (noun)
a free-reeded instrument with a piano keyboard in which air is forced through the reeds by bellows	a free-reeded instrument with a piano keyboard in which air is forced through the reeds by bellows