ratability vs liability

ratability and liability both are nouns.

Word	Noun	Adjective	Verb	Adverb
ratability	Yes	No	No	No
liability	Yes	No	No	No

As nouns, liability is a hypernym of ratability; that is, liability is a word with a broader meaning than ratability:

ratability (noun)	liability (noun)
the quality of being capable of being rated or estimated	the quality of being something that holds you back
the state of being liable to assessment or taxation	an obligation to pay money to another party
	the state of being legally obliged and responsible