legalisation vs legitimation

legalisation and legitimation both are nouns.

Word	Noun	Adjective	Verb	Adverb
legalisation	Yes	No	No	No
legitimation	Yes	No	No	No

As nouns, legalisation and legitimation are synonyms defined as:

Other synonyms of legalisation include legalization.

legalisation (noun)	legitimation (noun)
the act of making lawful	the act of making lawful
	the act of rendering a person legitimate