.22-calibre vs British spelling

.22-calibre is not a noun while British spelling is a noun.

Word	Noun	Adjective	Verb	Adverb
.22-calibre	No	Yes	No	No
British spelling	Yes	No	No	No

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

.22-calibre (adjective)	British spelling (adjective)
of or relating to the bore of a gun (or its ammunition) that measures twenty-two hundredths of an inch in diameter