defective vs substantial

defective

noun
  • A word written without matres lectionis (letters indicating vowels). 

  • A person or thing considered to be defective. 

adv
  • Without matres lectionis (letters indicating vowels) written out. 

adj
  • Not capable of representing all the phonemic distinctions of a language it is used to write. 

  • Spelled without matres lectionis, for example אמץ (ómets, “courage”) as opposed to the plene spelling אומץ where the letter vav ⟨ו⟩ indicates the vowel o. 

  • Lacking some forms; e.g., having only one tense or being usable only in the third person. 

  • Having one or more defects. 

  • Having a root whose final consonant is weak (ي, و, or ء). 

substantial

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. 

noun
  • Anything having substance; an essential part. 

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