acquirement vs ability

acquirement and ability both are nouns.

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

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

acquirement: an ability that has been acquired by training
ability: possession of the qualities (especially mental qualities) required to do something or get something done

Other hypernyms of acquirement include power.

acquirement (noun)	ability (noun)
an ability that has been acquired by training	the quality of being able to perform; a quality that permits or facilitates achievement or accomplishment
	possession of the qualities (especially mental qualities) required to do something or get something done