immaculacy vs ne plus ultra

immaculacy and ne plus ultra both are nouns.

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

As nouns, ne plus ultra is a hypernym of immaculacy; that is, ne plus ultra is a word with a broader meaning than immaculacy:

immaculacy: The characteristic of having no stain or blemish; of being spotless, undefiled, clear, pure.
ne plus ultra: the state of being without a flaw or defect

Other hypernyms of immaculacy include flawlessness, perfection.

immaculacy (noun)	ne plus ultra (noun)
The characteristic of having no stain or blemish; of being spotless, undefiled, clear, pure.	the state of being without a flaw or defect