literacy vs attainment

literacy and attainment both are nouns.

Word	Noun	Adjective	Verb	Adverb
literacy	Yes	No	No	No
attainment	Yes	No	No	No

As nouns, attainment is a hypernym of literacy; that is, attainment is a word with a broader meaning than literacy:

Other hypernyms of literacy include accomplishment, acquirement, acquisition, skill.

literacy (noun)	attainment (noun)
the ability to read and write	the act of achieving an aim
	arrival at a new stage
	an ability that has been acquired by training