stimulus generalisation vs British spelling

stimulus generalisation and British spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
stimulus generalisation	Yes	No	No	No
British spelling	Yes	No	No	No

stimulus generalisation (noun)	British spelling (noun)
(psychology) transfer of a response learned to one stimulus to a similar stimulus	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')