beetling vs extrusive

beetling

adj
  • Jutting or protruding, especially of a person's brows. 

noun
  • The process by which fabrics, etc. are beetled, or beaten with a mallet. 

extrusive

adj
  • Jutting out; extruding. 

  • Of rocks: forced, while in a plastic or molten state, on to the Earth's surface to lie atop existing rocks. 

noun
  • Rock which has been formed through volcanic extrusion. 

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