what does nonlinear correlation mean?

NONLINEAR CORRELATION as NOUN

Meaning
- any correlation in which the rates of change of the variables is not constant
Synonym(s)
- curvilinear correlation (what does curvilinear correlation mean?)
- skew correlation (what does skew correlation mean?)
Hypernyms(s) nonlinear correlation is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- correlation (what does correlation mean?)
- correlational statistics (what does correlational statistics mean?)