explain vs render

explain

verb
  • To make plain, manifest, or intelligible; to clear of obscurity; to illustrate the meaning of. 

  • To give a valid excuse for past behavior. 

  • To make something plain or intelligible. 

render

verb
  • To interpret, give an interpretation or rendition of. 

  • To translate into another language. 

  • To make over as a return. 

  • To capture and turn over to another country secretly and extrajudicially. 

  • To convert waste animal tissue into a usable byproduct. 

  • To cover a wall with a layer of plaster. 

  • To have fat drip off meat from cooking. 

  • To cause to become. 

  • To pass down. 

  • To give; to give back; to deliver. 

  • To transform (a model) into a display on the screen or other media. 

  • To pass; to run; said of the passage of a rope through a block, eyelet, etc. 

  • To yield or give way. 

noun
  • One who rends. 

  • Stucco or plaster applied to walls (mostly to outside masonry walls). 

  • A digital image produced by rendering a model. 

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