intonate vs intonation

intonate is not a noun while intonation is a noun.

Word	Noun	Adjective	Verb	Adverb
intonate	No	No	Yes	No
intonation	Yes	No	No	No

intonate (noun)	intonation (noun)
	the act of singing in a monotonous tone
	singing by a soloist of the opening piece of plainsong
	the production of musical tones (by voice or instrument); especially the exactitude of the pitch relations
	rise and fall of the voice pitch

intonate (verb)	intonation (verb)
recite with musical intonation; recite as a chant or a psalm
speak carefully, as with rising and falling pitch or in a particular tone