bastardise vs British spelling

bastardise is not a noun while British spelling is a noun.

Word	Noun	Adjective	Verb	Adverb
bastardise	No	No	Yes	No
British spelling	Yes	No	No	No

bastardise (noun)	British spelling (noun)
	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')

bastardise (verb)	British spelling (verb)
declare a child to be illegitimate
change something so that its value declines; for example, art forms