realisation vs realise

realisation is a noun but realise is not a noun.

Word	Noun	Adjective	Verb	Adverb
realisation	Yes	No	No	No
realise	No	No	Yes	No

realisation (noun)	realise (noun)
making real or giving the appearance of reality
a sale in order to obtain money (as a sale of stock or a sale of the estate of a bankrupt person) or the money so obtained
something that is made real or concrete
the completion or enrichment of a piece of music left sparsely notated by a composer
coming to understand something clearly and distinctly
a musical composition that has been completed or enriched by someone other than the composer

realisation (verb)	realise (verb)
	perceive (an idea or situation) mentally
	be fully aware or cognizant of
	make real or concrete; give reality or substance to
	expand or complete (a part in a piece of baroque music) by supplying the harmonies indicated in the figured bass
	convert into cash; of goods and property
	earn on some commercial or business transaction; earn as salary or wages