shuttle helicopter vs chopper

shuttle helicopter and chopper both are nouns.

Word	Noun	Adjective	Verb	Adverb
shuttle helicopter	Yes	No	No	No
chopper	Yes	No	No	No

As nouns, chopper is a hypernym of shuttle helicopter; that is, chopper is a word with a broader meaning than shuttle helicopter:

shuttle helicopter: a helicopter that shuttles back and forth
chopper: an aircraft without wings that obtains its lift from the rotation of overhead blades

Other hypernyms of shuttle helicopter include eggbeater, helicopter, whirlybird.

shuttle helicopter (noun)	chopper (noun)
a helicopter that shuttles back and forth	a grounder that bounces high in the air
	a butcher's knife having a large square blade
	an aircraft without wings that obtains its lift from the rotation of overhead blades
	informal terms for a human `tooth'