en vs tone

en

pron
  • him 

  • it (when the thing being referred to is masculine) 

prep
  • Used in various phrases borrowed from French or formed as if borrowed from French (see "Derived terms" below). 

noun
  • The name of the Latin-script letter N/n. 

  • A unit of measurement equal to half an em (half the height of the type in use). 

  • The name of the Cyrillic script letter Н / н. 

tone

pron
  • the one (of two) 

verb
  • to change the colour of 

  • to give a particular tone to 

  • to utter with an affected tone. 

  • to make (something) firmer 

noun
  • The quality of being respectable or admirable. 

  • The pitch of a word that distinguishes a difference in meaning, for example in Chinese. 

  • The manner in which speech or writing is expressed. 

  • The character of a sound, especially the timbre of an instrument or voice. 

  • A specific pitch. 

  • (in a Gregorian chant) A recitational melody. 

  • The state of a living body or of any of its organs or parts in which the functions are healthy and performed with due vigor. 

  • a gun 

  • The shade or quality of a colour. 

  • The favourable effect of a picture produced by the combination of light and shade, or of colours. 

  • The definition and firmness of a muscle or organ; see also: tonus. 

  • (in the diatonic scale) An interval of a major second. 

  • Normal tension or responsiveness to stimuli. 

  • The general character, atmosphere, mood, or vibe (of a situation, place, etc.). 

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