modulate vs inflect

modulate and inflect both are verbs.

Word	Noun	Adjective	Verb	Adverb
modulate	No	No	Yes	No
inflect	No	No	Yes	No

As verbs, modulate and inflect are synonyms defined as:

Other synonyms of modulate include tone.

modulate (verb)	inflect (verb)
adjust the pitch, tone, or volume of	vary the pitch of one's speech
fix or adjust the time, amount, degree, or rate of	change the form of a word in accordance as required by the grammatical rules of the language
vary the frequency, amplitude, phase, or other characteristic of (electromagnetic waves)
vary the pitch of one's speech
change the key of, in music