retain vs shed

retain

verb
  • To keep in possession or use. 

  • To employ by paying a retainer. 

  • To hold back (a pupil) instead of allowing them to advance to the next class or year. 

  • To keep in one's pay or service. 

  • To hold secure. 

shed

verb
  • To sprinkle; to intersperse; to cover. 

  • to woodshed 

  • To radiate, cast, give off (light); see also shed light on. 

  • To divide, as the warp threads, so as to form a shed, or passageway, for the shuttle. 

  • To part with, separate from, leave off; cast off, let fall, be divested of. 

  • To allow to flow or fall. 

  • To place or allocate a vehicle, such as a locomotive, in or to a depot or shed. 

noun
  • An automobile which is old, worn-out, slow, or otherwise of poor quality. 

  • An area between upper and lower warp yarns through which the weft is woven. 

  • A large temporary open structure for reception of goods. 

  • A British Rail Class 66 locomotive. 

  • A slight or temporary structure built to shade or shelter something; a structure usually open in front; an outbuilding; a hut. 

  • A unit of area equivalent to 10⁻⁵² square meters; used in nuclear physics 

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