ratiocinate vs ratiocination

ratiocinate is not a noun while ratiocination is a noun.

Word	Noun	Adjective	Verb	Adverb
ratiocinate	No	No	Yes	No
ratiocination	Yes	No	No	No

ratiocinate (noun)	ratiocination (noun)
	logical and methodical reasoning
	the proposition arrived at by logical reasoning (such as the proposition that must follow from the major and minor premises of a syllogism)

ratiocinate (verb)	ratiocination (verb)
reason methodologically and logically