harmonic vs mellowed

harmonic

adj
  • pleasant to hear; harmonious; melodious 

  • recurring periodically 

  • Of or relating to a generation an even number of generations distant from a particular person. 

  • pertaining to harmony 

  • used to characterize various mathematical entities or relationships supposed to bear some resemblance to musical consonance 

  • Exhibiting or applying constraints on what vowels (e.g. front/back vowels only) may be found near each other and sometimes in the entire word. 

noun
  • One of a class of functions that enter into the development of the potential of a nearly spherical mass due to its attraction. 

  • One's child. 

  • A component frequency of the signal of a wave that is an integer multiple of the fundamental frequency. 

  • The place where, on a bowed string instrument, a note in the harmonic series of a particular string can be played without the fundamental present. 

mellowed

adj
  • That has become mellow. 

  • That has turned soft or tender by reason of ripeness. 

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