flexibility vs adaptability

flexibility and adaptability both are nouns.

Word	Noun	Adjective	Verb	Adverb
flexibility	Yes	No	No	No
adaptability	Yes	No	No	No

As nouns, adaptability is a hypernym of flexibility; that is, adaptability is a word with a broader meaning than flexibility:

flexibility: the quality of being adaptable or variable
adaptability: the ability to change (or be changed) to fit changed circumstances

flexibility (noun)	adaptability (noun)
the quality of being adaptable or variable	the ability to change (or be changed) to fit changed circumstances
the property of being flexible; easily bent or shaped
the trait of being easily persuaded