churning vs roily

churning and roily both are adjectives.

Word	Noun	Adjective	Verb	Adverb
churning	No	Yes	No	No
roily	No	Yes	No	No

As adjectives, churning and roily are synonyms defined as:

churning and roily: (of a liquid) agitated vigorously; in a state of turbulence

Other synonyms of churning include roiled, roiling, turbulent.

churning (adjective)	roily (adjective)
(of a liquid) agitated vigorously; in a state of turbulence	(of a liquid) agitated vigorously; in a state of turbulence
moving with or producing or produced by vigorous agitation