ne plus ultra vs perfection

ne plus ultra and perfection both are nouns.

Word	Noun	Adjective	Verb	Adverb
ne plus ultra	Yes	No	No	No
perfection	Yes	No	No	No

As nouns, ne plus ultra and perfection are synonyms defined as:

ne plus ultra and perfection: the state of being without a flaw or defect

Other synonyms of ne plus ultra include flawlessness.

ne plus ultra (noun)	perfection (noun)
the state of being without a flaw or defect	the act of making something perfect
	an ideal instance; a perfect embodiment of a concept
	the state of being without a flaw or defect