decay vs change integrity

decay is a noun but change integrity is not a noun.

Word	Noun	Adjective	Verb	Adverb
decay	Yes	No	Yes	No
change integrity	No	No	Yes	No

As verbs, change integrity is a hypernym of decay; that is, change integrity is a word with a broader meaning than decay:

decay (noun)	change integrity (noun)
the organic phenomenon of rotting
a gradual decrease; as of stored charge or current
the process of gradually becoming inferior
the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
an inferior state resulting from the process of decaying

decay (verb)	change integrity (verb)
fall into decay or ruin	change in physical make-up
lose a stored charge, magnetic flux, or current
undergo decay or decomposition