collectibility vs attainability

collectibility and attainability both are nouns.

Word	Noun	Adjective	Verb	Adverb
collectibility	Yes	No	No	No
attainability	Yes	No	No	No

As nouns, attainability is a hypernym of collectibility; that is, attainability is a word with a broader meaning than collectibility:

collectibility: The quality of being subject to payment or likely to be paid.
attainability: the state of being achievable

Other hypernyms of collectibility include achievability, attainableness.

collectibility (noun)	attainability (noun)
The quality of being subject to payment or likely to be paid.	the state of being achievable