shooting gallery vs shooting range

shooting gallery and shooting range both are nouns.

Word	Noun	Adjective	Verb	Adverb
shooting gallery	Yes	No	No	No
shooting range	Yes	No	No	No

As nouns, shooting gallery and shooting range are synonyms defined as:

shooting gallery and shooting range: an enclosed firing range with targets for rifle or handgun practice

shooting gallery (noun)	shooting range (noun)
an enclosed firing range with targets for rifle or handgun practice	an enclosed firing range with targets for rifle or handgun practice
a building (usually abandoned) where drug addicts buy and use heroin