pitch contour vs intonation

pitch contour and intonation both are nouns.

Word	Noun	Adjective	Verb	Adverb
pitch contour	Yes	No	No	No
intonation	Yes	No	No	No

As nouns, pitch contour and intonation are synonyms defined as:

Other synonyms of pitch contour include modulation.

pitch contour (noun)	intonation (noun)
rise and fall of the voice pitch	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