buntline coil vs helix

buntline coil and helix both are nouns.

Word	Noun	Adjective	Verb	Adverb
buntline coil	Yes	No	No	No
helix	Yes	No	No	No

As nouns, helix is a hypernym of buntline coil; that is, helix is a word with a broader meaning than buntline coil:

buntline coil: A basic coil for storing rope.
helix: a structure consisting of something wound in a continuous series of loops

Other hypernyms of buntline coil include coil, spiral, volute, whorl.

buntline coil (noun)	helix (noun)
A basic coil for storing rope.	a structure consisting of something wound in a continuous series of loops
	a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle