crampoon vs grappling hook

crampoon and grappling hook both are nouns.

Word	Noun	Adjective	Verb	Adverb
crampoon	Yes	No	No	No
grappling hook	Yes	No	No	No

As nouns, grappling hook is a hypernym of crampoon; that is, grappling hook is a word with a broader meaning than crampoon:

crampoon: a hinged pair of curved iron bars; used to raise heavy objects
grappling hook: a tool consisting of several hooks for grasping and holding; often thrown with a rope

Other hypernyms of crampoon include grapnel, grapple, grappler, grappling iron.

crampoon (noun)	grappling hook (noun)
an iron spike attached to the shoe to prevent slipping on ice when walking or climbing	a tool consisting of several hooks for grasping and holding; often thrown with a rope
a hinged pair of curved iron bars; used to raise heavy objects