churn up vs sicken

churn up and sicken both are verbs.

Word	Noun	Adjective	Verb	Adverb
churn up	No	No	Yes	No
sicken	No	No	Yes	No

As verbs, churn up and sicken are synonyms defined as:

Other synonyms of churn up include disgust, nauseate, revolt.

churn up (verb)	sicken (verb)
cause aversion in; offend the moral sense of	get sick
	make sick or ill
	cause aversion in; offend the moral sense of
	upset and make nauseated