centralisation vs integration

centralisation and integration both are nouns.

Word	Noun	Adjective	Verb	Adverb
centralisation	Yes	No	No	No
integration	Yes	No	No	No

As nouns, integration is a hypernym of centralisation; that is, integration is a word with a broader meaning than centralisation:

Other hypernyms of centralisation include consolidation.

centralisation (noun)	integration (noun)
the act of consolidating power under a central control	the action of incorporating a racial or religious group into a community
gathering to a center	the act of combining into an integral whole
	an operation used in the calculus whereby the integral of a function is determined