replaceability vs fungibility

replaceability and fungibility both are nouns.

Word	Noun	Adjective	Verb	Adverb
replaceability	Yes	No	No	No
fungibility	Yes	No	No	No

As nouns, fungibility is a hypernym of replaceability; that is, fungibility is a word with a broader meaning than replaceability:

Other hypernyms of replaceability include exchangeability, interchangeability, interchangeableness.

replaceability (noun)	fungibility (noun)
exchangeability by virtue of being replaceable	the quality of being capable of exchange or interchange