commensurate vs mensurable

commensurate

adj
  • Of a proportionate or similar measurable standard. 

  • Describing a crystal in which every atom or molecule is placed in the same relative position 

verb
  • To proportionate; to adjust. 

  • To reduce to a common measure. 

mensurable

adj
  • measurable 

  • Having a fixed rhythm. 

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