excavate vs wormhole

excavate

verb
  • To make a hole in (something); to hollow. 

  • To uncover (something) by digging. 

  • To remove part of (something) by scooping or digging it out. 

noun
  • Any member of a major grouping of unicellular eukaryotes, of the clade Excavata. 

wormhole

verb
  • To make porous or permeable through the formation of small holes or tunnels. 

noun
  • A location in a monitor program containing the address of a routine, allowing the user to substitute different functionality. 

  • A hole burrowed by a worm. 

  • A hypothetical shortcut between two points in spacetime, permitting faster-than-light travel and sometimes time travel. 

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