eternal vs permanent

eternal is not a noun while permanent is a noun.

Word	Noun	Adjective	Verb	Adverb
eternal	No	Yes	No	No
permanent	Yes	Yes	No	No

eternal (noun)	permanent (noun)
	a series of waves in the hair made by applying heat and chemicals

eternal (adjective)	permanent (adjective)
tiresomely long; seemingly without end	continuing or enduring without marked change in status or condition or place
continuing forever or indefinitely	not capable of being reversed or returned to the original condition