exponential vs exponential function

exponential and exponential function both are nouns.

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

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

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

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

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