turret vs weapons platform

turret and weapons platform both are nouns.

Word	Noun	Adjective	Verb	Adverb
turret	Yes	No	No	No
weapons platform	Yes	No	No	No

As nouns, weapons platform is a hypernym of turret; that is, weapons platform is a word with a broader meaning than turret:

turret: a self-contained weapons platform housing guns and capable of rotation
weapons platform: any military structure or vehicle bearing weapons

Other hypernyms of turret include platform.

turret (noun)	weapons platform (noun)
a small tower extending above a building	any military structure or vehicle bearing weapons
a self-contained weapons platform housing guns and capable of rotation