materialist vs positivist

materialist

noun
  • A follower or proponent of philosophical materialism. 

  • Someone who is materialistic, concerned only with material possessions. 

adj
  • Having features typical of philosophical materialism. 

positivist

noun
  • A believer in positivism. 

adj
  • Related to positivism, positivistic. 

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