mass vs substantial

mass

adj
  • Involving a mass of things; concerning a large quantity or number. 

  • Involving a mass of people; of, for, or by the masses. 

noun
  • Bulk; magnitude; body; size. 

  • Excess body weight, especially in the form of muscle hypertrophy. 

  • Synonym of weight 

  • A quantity of matter cohering together so as to make one body, or an aggregation of particles or things which collectively make one body or quantity, usually of considerable size. 

  • The Eucharist, now especially in Roman Catholicism. 

  • A large body of individuals, especially persons. 

  • Celebration of the Eucharist. 

  • The lower classes of persons. 

  • The sacrament of the Eucharist. 

  • The quantity of matter which a body contains, irrespective of its bulk or volume. It is one of four fundamental properties of matter. SI unit of mass: kilogram. 

  • A musical setting of parts of the mass. 

  • A palpable or visible abnormal globular structure; a tumor. 

  • A medicinal substance made into a cohesive, homogeneous lump, of consistency suitable for making pills; as, blue mass. 

  • The principal part; the main body. 

  • A large quantity; a sum. 

verb
  • To form or collect into a mass; to form into a collective body; to bring together into masses; to assemble. 

  • To assemble in a mass 

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 mass and substantial occurred in a corpus of books? (source: Google Ngram Viewer )