mouth vs voice

mouth

verb
  • To speak; to utter. 

  • To form or cleanse with the mouth; to lick, as a bear licks her cub. 

  • To take into the mouth; to seize or grind with the mouth or teeth; to chew; to devour. 

  • To form a mouth or opening in. 

  • To carry in the mouth. 

  • To pick up or handle with the lips or mouth, but not chew or swallow. 

  • The prompter mouthed the words to the actor, who had forgotten them. 

  • To form with the mouth. 

  • To utter with a voice that is overly loud or swelling. 

  • To examine the teeth of. 

  • To make the actions of speech, without producing sound. 

  • To exit at a mouth (such as a river mouth) 

noun
  • The end of a river out of which water flows into a sea or other large body of water. 

  • The opening of a creature through which food is ingested. 

  • The crosspiece of a bridle bit, which enters the mouth of an animal. 

  • An outlet, aperture or orifice. 

  • A loud or overly talkative person. 

voice

verb
  • To give utterance or expression to; to utter; to publish; to announce 

  • To assign the voice flag to a user on IRC, permitting them to send messages to the channel. 

  • To act as a voice actor to portray a character. 

  • To fit for producing the proper sounds; to regulate the tone of 

  • To utter audibly, with tone and not just breath. 

noun
  • Sound uttered by the mouth, especially by human beings in speech or song; sound thus uttered considered as possessing some special quality or character 

  • The tone or sound emitted by an object 

  • That which is communicated; message; meaning. 

  • Sound made through vibration of the vocal cords; sonant, or intonated, utterance; tone; — distinguished from mere breath sound as heard in whispering and voiceless consonants. 

  • An expressed opinion, choice, will, desire, or wish; the right or ability to make such expression or to have it considered 

  • A particular style or way of writing that expresses a certain tone or feeling. 

  • A particular way of inflecting or conjugating verbs, or a particular form of a verb, by means of which is indicated the relation of the subject of the verb to the action which the verb expresses. 

  • In harmony, an independent vocal or instrumental part in a piece of composition. 

  • A flag associated with a user on a channel, determining whether or not they can send messages to the channel. 

  • One who speaks; a speaker. 

  • The faculty or power of utterance 

How often have the words mouth and voice occurred in a corpus of books? (source: Google Ngram Viewer )