bastardise vs demoralise

bastardise and demoralise both are verbs.

Word	Noun	Adjective	Verb	Adverb
bastardise	No	No	Yes	No
demoralise	No	No	Yes	No

As verbs, demoralise is a hypernym of bastardise; that is, demoralise is a word with a broader meaning than bastardise:

bastardise: change something so that its value declines; for example, art forms
demoralise: corrupt morally or by intemperance or sensuality

Other hypernyms of bastardise include corrupt, debase, debauch, demoralize, deprave, misdirect, pervert, profane, subvert, vitiate.

bastardise (verb)	demoralise (verb)
declare a child to be illegitimate	lower someone's spirits; make downhearted
change something so that its value declines; for example, art forms	corrupt morally or by intemperance or sensuality