substantial vs tonic

substantial

noun
  • Anything having substance; an essential part. 

adj
  • Most important; essential. 

  • Not imaginary; real; actual; true; veritable. 

  • Having a substance; actually existing. 

  • Corporeal; material; firm. 

  • Possessed of goods or an estate; moderately wealthy. 

  • Satisfying; having sufficient substance to be nourishing or filling. 

  • Large in size, quantity, or value; ample; significant. 

  • Having good substance; strong; stout; solid; firm. 

tonic

noun
  • A substance with medicinal properties intended to restore or invigorate. 

  • Someone or something that revitalises or reinvigorates. 

  • The first note of a diatonic scale; the keynote. 

  • The triad built on the tonic note. 

  • Tonic water. 

  • Any of various carbonated, non-alcoholic beverages; soda pop. 

  • A tonic element or letter; a vowel or a diphthong. 

adj
  • Of or relating to tones or sounds; specifically (phonetics, dated) being or relating to a speech sound made with tone unmixed and undimmed by obstruction, i.e. a vowel or diphthong. 

  • Pertaining to tension, especially of muscles. 

  • In a state of continuous unremitting action. 

  • Restorative, curative or invigorating. 

  • Pertaining to or based upon the first note of a diatonic scale. 

  • Pertaining to the accent or stress in a word or in speech. 

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