unguinous vs viscid

unguinous

adj
  • Consisting of, or resembling, fat or oil; unctuous; oleaginous. 

viscid

adj
  • Sticky, slimy, or glutinous. 

  • Viscous; having a high viscosity. 

  • Covered with a viscid layer. 

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