memorization vs acquisition

memorization and acquisition both are nouns.

Word	Noun	Adjective	Verb	Adverb
memorization	Yes	No	No	No
acquisition	Yes	No	No	No

As nouns, acquisition is a hypernym of memorization; that is, acquisition is a word with a broader meaning than memorization:

Other hypernyms of memorization include learning.

memorization (noun)	acquisition (noun)
learning so as to be able to remember verbatim	the act of contracting or assuming or acquiring possession of something
	an ability that has been acquired by training
	the cognitive process of acquiring skill or knowledge
	something acquired