gnomon vs tone

gnomon

noun
  • The index of the hour circle of a globe. 

  • A plane figure formed by removing a parallelogram from a corner of a larger parallelogram. 

  • An object such as a pillar or a rod that is used to tell time by the shadow it casts when the sun shines on it, especially the pointer on a sundial. 

  • An object such as a pillar used by an observer to calculate the meridian altitude of the sun (that is, the altitude of the sun when it reaches the observer's meridian), for the purpose of determining the observer's latitude. 

  • A number representing the increment between two figurate numbers (“numbers equal to the numbers of dots in geometric figures formed of dots”). 

tone

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

  • 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. 

  • Normal tension or responsiveness to stimuli. 

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

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 

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