agonise vs British spelling

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

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

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

agonise (verb)	British spelling (verb)
suffer agony or anguish
cause to agonize