building code vs codification

building code and codification both are nouns.

Word	Noun	Adjective	Verb	Adverb
building code	Yes	No	No	No
codification	Yes	No	No	No

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

building code: set of standards established and enforced by local government for the structural safety of buildings
codification: a set of rules or principles or laws (especially written ones)

Other hypernyms of building code include code.

building code (noun)	codification (noun)
set of standards established and enforced by local government for the structural safety of buildings	the act of codifying; arranging in a systematic order
	a set of rules or principles or laws (especially written ones)