plus vs substantial

plus

adj
  • (Of a quantity) Equal to or greater than; or more; upwards. 

  • Electrically positive. 

  • Being positive rather than negative or zero. 

  • Positive, or involving advantage. 

prep
  • And; sum of the previous one and the following one. 

  • With; having in addition. 

noun
  • A positive quantity. 

  • A plus sign: +. 

  • An asset or useful addition. 

conj
  • And also; in addition; besides (which). 

verb
  • To add; to subject to addition. 

  • To increase the potency of a remedy by diluting it in water and stirring. 

  • To provide critical feedback by giving suggestions for improvement rather than criticisms. 

  • To sell additional related items with an original purchase. 

  • To increase in magnitude. 

  • To increase a correction. 

  • To frame in a positive light; to provide a sympathetic interpretation. 

  • To improve. 

substantial

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

  • 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. 

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

noun
  • Anything having substance; an essential part. 

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