shelter vs shielding

shelter

noun
  • A refuge, haven or other cover or protection from something. 

  • An institution that provides temporary housing for homeless people, battered women, etc. 

verb
  • To take cover. 

  • To provide cover from damage or harassment; to shield; to protect. 

shielding

noun
  • The situation, in NMR spectroscopy, in which a local magnetic field is weakened by the presence of neighbouring nuclei 

  • Action done by the person with the ball to protect the ball from the defender; the person concerned keeps his body between the ball and the defender. 

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