codification vs systematization

codification and systematization both are nouns.

Word	Noun	Adjective	Verb	Adverb
codification	Yes	No	No	No
systematization	Yes	No	No	No

As nouns, systematization is a hypernym of codification; that is, systematization is a word with a broader meaning than codification:

codification: the act of codifying; arranging in a systematic order
systematization: systematic organization; the act of organizing something according to a system or a rationale

Other hypernyms of codification include rationalisation, rationalization, systematisation.

codification (noun)	systematization (noun)
the act of codifying; arranging in a systematic order	systematic organization; the act of organizing something according to a system or a rationale
a set of rules or principles or laws (especially written ones)