lifting device vs crane

lifting device and crane both are nouns.

Word	Noun	Adjective	Verb	Adverb
lifting device	Yes	No	No	No
crane	Yes	No	Yes	No

As nouns, crane is a hyponym of lifting device; that is, crane is a word with a more specific, narrower meaning than lifting device:

lifting device: a device for lifting heavy loads
crane: lifts and moves heavy objects; lifting tackle is suspended from a pivoted boom that rotates around a vertical axis

Other hyponyms of lifting device include elevator, lift, hoist, winch, windlass.

lifting device (noun)	crane (noun)
a device for lifting heavy loads	large long-necked wading bird of marshes and plains in many parts of the world
	lifts and moves heavy objects; lifting tackle is suspended from a pivoted boom that rotates around a vertical axis

lifting device (verb)	crane (verb)
	stretch (the neck) so as to see better