linear vs nonlinear

linear and nonlinear both are adjectives.

Word	Noun	Adjective	Verb	Adverb
linear	No	Yes	No	No
nonlinear	No	Yes	No	No

linear (adjective)	nonlinear (adjective)
of or in or along or relating to a line; involving or having a single dimension	designating or involving an equation whose terms are not of the first degree
designating or involving an equation whose terms are of the first degree
of a circuit or device having an output that is proportional to the input
measured lengthwise
(of a leaf shape) long and narrow