mastership vs acquisition

mastership and acquisition both are nouns.

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

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

Other hypernyms of mastership include accomplishment, acquirement, attainment, skill.

mastership (noun)	acquisition (noun)
the position of master	the act of contracting or assuming or acquiring possession of something
the skill of a master	an ability that has been acquired by training
	the cognitive process of acquiring skill or knowledge
	something acquired