orchestral bells vs glockenspiel

orchestral bells and glockenspiel both are nouns.

Word	Noun	Adjective	Verb	Adverb
orchestral bells	Yes	No	No	No
glockenspiel	Yes	No	No	No

As nouns, orchestral bells and glockenspiel are synonyms defined as:

orchestral bells and glockenspiel: a percussion instrument consisting of a set of graduated metal bars mounted on a frame and played with small hammers

orchestral bells (noun)	glockenspiel (noun)
a percussion instrument consisting of a set of graduated metal bars mounted on a frame and played with small hammers	a percussion instrument consisting of a set of graduated metal bars mounted on a frame and played with small hammers