tone of voice vs speech

tone of voice and speech both are nouns.

Word	Noun	Adjective	Verb	Adverb
tone of voice	Yes	No	No	No
speech	Yes	No	No	No

As nouns, speech is a hypernym of tone of voice; that is, speech is a word with a broader meaning than tone of voice:

Other hypernyms of tone of voice include delivery, manner of speaking.

tone of voice (noun)	speech (noun)
the quality of a person's voice	the mental faculty or power of vocal communication
	(language) communication by word of mouth
	the act of delivering a formal spoken communication to an audience
	words making up the dialogue of a play
	a lengthy rebuke
	the exchange of spoken words
	your characteristic style or manner of expressing yourself orally
	something spoken