configurational vs constructive

configurational

adj
  • Of or pertaining to a configuration. 

  • Of a language: having a relatively fixed style of grammar where the subject of a sentence is outside the finite verb phrase but the object is inside it. 

constructive

adj
  • Relating to or causing construction. 

  • Not direct or expressed, but inferred. 

  • Imputed by law; created to give legal effect to something for equitable reasons, as with constructive notice or a constructive trust. 

  • Carefully considered and meant to be helpful. 

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