shuttle helicopter vs eggbeater

shuttle helicopter and eggbeater both are nouns.

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

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

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

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

shuttle helicopter (noun)	eggbeater (noun)
a helicopter that shuttles back and forth	a mixer for beating eggs or whipping cream
	an aircraft without wings that obtains its lift from the rotation of overhead blades