stability vs changelessness

stability and changelessness both are nouns.

Word	Noun	Adjective	Verb	Adverb
stability	Yes	No	No	No
changelessness	Yes	No	No	No

As nouns, changelessness is a hypernym of stability; that is, changelessness is a word with a broader meaning than stability:

stability: the quality of being enduring and free from change or variation
changelessness: the quality of being unchangeable; having a marked tendency to remain unchanged

Other hypernyms of stability include unchangeability, unchangeableness, unchangingness.

stability (noun)	changelessness (noun)
the quality or attribute of being firm and steadfast	the quality of being unchangeable; having a marked tendency to remain unchanged
the quality of being enduring and free from change or variation	the property of remaining unchanged
a stable order (especially of society)