dictionary form vs normal form

dictionary form

noun
  • The basic form of a word used as a dictionary entry (of any part of speech, but especially of a verb). 

normal form

noun
  • A standard, canonical way of presenting an object. 

  • A matrix that represents the possible outcomes of a game 

  • Any of various forms of a relational database providing criteria for determining a table's degree of vulnerability to logical inconsistencies and anomalies. 

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