sicken vs churn up

sicken and churn up both are verbs.

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

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

Other synonyms of sicken include disgust, nauseate, revolt.

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