characterisic function vs characteristic curve

characterisic function and characteristic curve both are nouns.

Word	Noun	Adjective	Verb	Adverb
characterisic function	Yes	No	No	No
characteristic curve	Yes	No	No	No

As nouns, characterisic function and characteristic curve are synonyms defined as:

characterisic function and characteristic curve: (electronics) graph showing how a particular characteristic of a device varies with other parameters

characterisic function (noun)	characteristic curve (noun)
(electronics) graph showing how a particular characteristic of a device varies with other parameters	(electronics) graph showing how a particular characteristic of a device varies with other parameters