delivery vs modulation

delivery and modulation both are nouns.

Word	Noun	Adjective	Verb	Adverb
delivery	Yes	No	No	No
modulation	Yes	No	No	No

As nouns, modulation is a hyponym of delivery; that is, modulation is a word with a more specific, narrower meaning than delivery:

delivery: your characteristic style or manner of expressing yourself orally
modulation: a manner of speaking in which the loudness or pitch or tone of the voice is modified

Other hyponyms of delivery include address, catch, tongue, shibboleth, tone, tone of voice, elocution, inflection, prosody, inflection.

delivery (noun)	modulation (noun)
recovery or preservation from loss or danger	the act of modifying or adjusting according to due measure and proportion (as with regard to artistic effect)
the voluntary transfer of something (title or possession) from one party to another	(electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phase
the act of delivering a child	a musical passage moving from one key to another
the act of throwing a baseball or softball by the pitcher towards home plate, which initiates play by giving the batter a chance to hit it	rise and fall of the voice pitch
the act of delivering or distributing something (as goods or mail)	a manner of speaking in which the loudness or pitch or tone of the voice is modified
your characteristic style or manner of expressing yourself orally
the event of giving birth