spiralling vs coiling

spiralling and coiling both are adjectives.

Word	Noun	Adjective	Verb	Adverb
spiralling	No	Yes	No	No
coiling	No	Yes	No	No

As adjectives, spiralling and coiling are synonyms defined as:

Other synonyms of spiralling include helical, spiral, spiraling, turbinate, volute, voluted, whorled.

spiralling (adjective)	coiling (adjective)
in the shape of a coil	in the shape of a coil