cloudy vs semiopaque

cloudy

adj
  • Using or relating to cloud computing. 

  • Containing pith 

  • Not transparent or clear. 

  • Covered with or characterised by clouds; overcast. 

  • Uncertain; unclear. 

semiopaque

adj
  • Partially opaque. 

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