black humour vs Canadian spelling

black humour and Canadian spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
black humour	Yes	No	No	No
Canadian spelling	Yes	No	No	No

black humour (noun)	Canadian spelling (noun)
the juxtaposition of morbid and farcical elements (in writing or drama) to give a disturbing effect	English orthography used in Canada (characterized by 'analyze', 'centre', 'useable')