materialist vs rationalist

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. 

rationalist

noun
  • A person who follows the philosophy of rationalism 

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