lodgement vs fixity

lodgement and fixity both are nouns.

Word	Noun	Adjective	Verb	Adverb
lodgement	Yes	No	No	No
fixity	Yes	No	No	No

As nouns, fixity is a hypernym of lodgement; that is, fixity is a word with a broader meaning than lodgement:

Other hypernyms of lodgement include fastness, fixedness, fixture, secureness, allegation.

lodgement (noun)	fixity (noun)
the state or quality of being lodged or fixed even temporarily	the quality of being fixed in place as by some firm attachment
	the quality of being incapable of mutation