exponential function vs exponential

exponential function and exponential both are nouns.

Word	Noun	Adjective	Verb	Adverb
exponential function	Yes	No	No	No
exponential	Yes	Yes	No	No

As nouns, exponential function and exponential are synonyms defined as:

exponential function and exponential: a function in which an independent variable appears as an exponent

exponential function (noun)	exponential (noun)
a function in which an independent variable appears as an exponent	a function in which an independent variable appears as an exponent

exponential function (adjective)	exponential (adjective)
	of or involving exponents