settledness vs modus vivendi

settledness and modus vivendi both are nouns.

Word	Noun	Adjective	Verb	Adverb
settledness	Yes	No	No	No
modus vivendi	Yes	No	No	No

As nouns, modus vivendi is a hypernym of settledness; that is, modus vivendi is a word with a broader meaning than settledness:

settledness: The quality or state of being fixed, permanent or stationary; established.
modus vivendi: a manner of living that reflects the person's values and attitudes

Other hypernyms of settledness include life-style, life style, lifestyle, permanence, permanency.

settledness (noun)	modus vivendi (noun)
The quality or state of being fixed, permanent or stationary; established.	a manner of living that reflects the person's values and attitudes
	a temporary accommodation of a disagreement between parties pending a permanent settlement