bastardisation vs degradation

bastardisation and degradation both are nouns.

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

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

Other hypernyms of bastardisation include debasement.

bastardisation (noun)	degradation (noun)
an act that debases or corrupts	changing to a lower state (a less respected state)
	a low or downcast state