curvilinear correlation vs skew correlation

curvilinear correlation and skew correlation both are nouns.

Word	Noun	Adjective	Verb	Adverb
curvilinear correlation	Yes	No	No	No
skew correlation	Yes	No	No	No

As nouns, curvilinear correlation and skew correlation are synonyms defined as:

curvilinear correlation and skew correlation: any correlation in which the rates of change of the variables is not constant

Other synonyms of curvilinear correlation include nonlinear correlation.

curvilinear correlation (noun)	skew correlation (noun)
any correlation in which the rates of change of the variables is not constant	any correlation in which the rates of change of the variables is not constant