partial tone vs overtone

partial tone and overtone both are nouns.

Word	Noun	Adjective	Verb	Adverb
partial tone	Yes	No	No	No
overtone	Yes	No	No	No

As nouns, partial tone and overtone are synonyms defined as:

partial tone and overtone: a harmonic with a frequency that is a multiple of the fundamental frequency

Other synonyms of partial tone include partial.

partial tone (noun)	overtone (noun)
a harmonic with a frequency that is a multiple of the fundamental frequency	a harmonic with a frequency that is a multiple of the fundamental frequency
	(usually plural) an ulterior implicit meaning or quality