monitor speaker vs stage monitor

monitor speaker and stage monitor both are nouns.

Word	Noun	Adjective	Verb	Adverb
monitor speaker	Yes	No	No	No
stage monitor	Yes	No	No	No

As nouns, monitor speaker and stage monitor are synonyms defined as:

monitor speaker and stage monitor: One of the speakers on stage pointing towards the performers to help them hear themselves.

monitor speaker (noun)	stage monitor (noun)
One of the speakers on stage pointing towards the performers to help them hear themselves.	One of the speakers on stage pointing towards the performers to help them hear themselves.