materialist vs thoughtless

materialist

adj
  • Having features typical of philosophical materialism. 

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

  • A follower or proponent of philosophical materialism. 

thoughtless

adj
  • Marked by or showing lack of due thought or care; careless. 

  • Lacking thought or consideration. 

  • Inconsiderate, inattentive. 

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