antitumour vs British spelling

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

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

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

antitumour (adjective)	British spelling (adjective)
used in the treatment of cancer