originality vs ability

originality and ability both are nouns.

Word	Noun	Adjective	Verb	Adverb
originality	Yes	No	No	No
ability	Yes	No	No	No

As nouns, ability is a hypernym of originality; that is, ability is a word with a broader meaning than originality:

originality: the ability to think and act independently
ability: possession of the qualities (especially mental qualities) required to do something or get something done

Other hypernyms of originality include power.

originality (noun)	ability (noun)
the quality of being new and original (not derived from something else)	the quality of being able to perform; a quality that permits or facilitates achievement or accomplishment
the ability to think and act independently	possession of the qualities (especially mental qualities) required to do something or get something done