masculinisation vs British spelling

masculinisation and British spelling both are nouns.

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

masculinisation (noun)	British spelling (noun)
the abnormal development of male sexual characteristics in a female (usually as the result of hormone therapies or adrenal malfunction)	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')