fixity vs lodging

fixity and lodging both are nouns.

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

As nouns, lodging is a hyponym of fixity; that is, lodging is a word with a more specific, narrower meaning than fixity:

Other hyponyms of fixity include lodgement, lodgment.

fixity (noun)	lodging (noun)
the quality of being fixed in place as by some firm attachment	the act of lodging
the quality of being incapable of mutation	structures collectively in which people are housed
	the state or quality of being lodged or fixed even temporarily