indefinite vs plural

indefinite

noun
  • A word or phrase that designates an unspecified or unidentified person or thing or group of persons or things. 

adj
  • Undecided or uncertain. 

  • Being an integral without specified limits. 

  • Vague or unclear. 

  • Designating an unspecified or unidentified person or thing or group of persons or things 

  • Without limit; forever, or until further notice; not definite. 

plural

noun
  • A word in the form in which it potentially refers to something other than one person or thing; and other than two things if the language has a dual form. 

  • A person with some form of multiplicity, particularly dissociative identity disorder. 

  • The plural number. In English, referring to more or less than one of something. 

adj
  • Pluralistic. 

  • Consisting of or containing more than one of something. 

  • In systems of number, not singular or not singular or dual. 

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