cyclic vs rotary

cyclic is not a noun while rotary is a noun.

Word	Noun	Adjective	Verb	Adverb
cyclic	No	Yes	No	No
rotary	Yes	Yes	No	No

cyclic (noun)	rotary (noun)
	a road junction at which traffic streams circularly around a central island
	electrical converter consisting of a synchronous machine that converts alternating to direct current or vice versa

cyclic (adjective)	rotary (adjective)
recurring in cycles	relating to or characterized by rotation
of a compound having atoms arranged in a ring structure	describing a circle; moving in a circle
forming a whorl or having parts arranged in a whorl
conforming to the Carnot cycle
marked by repeated cycles