invaginate vs ravage

invaginate

verb
  • To turn or fold inwardly. 

  • To fold inward to create a hollow space where none had existed, as with a gastrula forming from a blastula. 

  • To fold up or enclose into a sheath-like or pouch-like structure, either naturally or as part of a surgical procedure. 

adj
  • Having one portion of a hollow organ drawn back within another portion. 

  • sheathed 

ravage

verb
  • To pillage or sack something, to lay waste to something. 

  • To devastate or destroy something. 

  • To have vigorous sexual intercourse with. 

  • To rape. 

  • To wreak destruction. 

noun
  • Depredation or devastation. 

  • Grievous damage or havoc. 

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