dehumanisation vs degradation

dehumanisation and degradation both are nouns.

Word	Noun	Adjective	Verb	Adverb
dehumanisation	Yes	No	No	No
degradation	Yes	No	No	No

As nouns, degradation is a hypernym of dehumanisation; that is, degradation is a word with a broader meaning than dehumanisation:

dehumanisation: the act of degrading people with respect to their best qualities
degradation: changing to a lower state (a less respected state)

Other hypernyms of dehumanisation include debasement.

dehumanisation (noun)	degradation (noun)
the act of degrading people with respect to their best qualities	changing to a lower state (a less respected state)
	a low or downcast state