socket vs wall plug

socket

noun
  • An opening into which a plug or other connecting part is designed to fit (e.g. a light bulb socket). 

  • One endpoint of a two-way communication link, used for interprocess communication across a network. 

  • A hollow into a bone which a part fits, such as an eye, or another bone, in the case of a joint. 

  • A hollow tool for grasping and lifting tools dropped in a well-boring. 

  • One endpoint of a two-way named pipe on Unix and Unix-like systems, used for interprocess communication. 

  • The hollow of a candlestick. 

  • A steel apparatus attached to a saddle to protect the thighs and legs. 

verb
  • To place or fit in a socket. 

wall plug

noun
  • An electric socket. 

  • A fixing that allows screws to be fitted into masonry walls, a dowel or screw anchor. 

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