crampoon vs grappler

crampoon and grappler both are nouns.

Word	Noun	Adjective	Verb	Adverb
crampoon	Yes	No	No	No
grappler	Yes	No	No	No

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

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

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

crampoon (noun)	grappler (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	combatant who tries to throw opponent to the ground