gaol vs British spelling

gaol and British spelling both are nouns.

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

gaol (noun)	British spelling (noun)
a correctional institution used to detain persons who are in the lawful custody of the government (either accused persons awaiting trial or convicted persons serving a sentence)	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')

gaol (verb)	British spelling (verb)
lock up or confine, in or as in a jail