fly floor vs fly gallery

fly floor and fly gallery both are nouns.

Word	Noun	Adjective	Verb	Adverb
fly floor	Yes	No	No	No
fly gallery	Yes	No	No	No

As nouns, fly floor and fly gallery are synonyms defined as:

fly floor and fly gallery: a narrow raised platform at the side of a stage in a theater; stagehands can work the ropes controlling equipment in the flies

fly floor (noun)	fly gallery (noun)
a narrow raised platform at the side of a stage in a theater; stagehands can work the ropes controlling equipment in the flies	a narrow raised platform at the side of a stage in a theater; stagehands can work the ropes controlling equipment in the flies