contemplative vs higher-order

contemplative

adj
  • Relating to, or having the power of, contemplation. 

  • In a phase of mental activity in which one begins to recognize and acknowledge the maladaptiveness of someone's behavior (such as own's own, or that of a family member or friend); usually with reference to substance use. 

  • Pertaining to a religious contemplative, or a contemplative religious orders, especially the Roman Catholic varieties. 

  • Inclined to contemplate; introspective and thoughtful; meditative. 

noun
  • Someone who has dedicated themselves to religious or philosophical contemplation. 

higher-order

adj
  • Involving more sophisticated thinking or reasoning. 

  • Of or relating to a class higher up in a hierarchy. 

How often have the words contemplative and higher-order occurred in a corpus of books? (source: Google Ngram Viewer )