stand-in vs surrogate

stand-in

noun
  • A substitute. 

  • A person of similar size and shape to an actor who "stands in" for that actor during the lengthy process of setting up a shot, but who, unlike a double, does not appear in the film. 

surrogate

noun
  • A substitute (usually of a person, position or role). 

  • A politician or person of influence campaigning for a presidential candidate. 

  • Any of a range of Unicode codepoints which are used in pairs in UTF-16 to represent characters beyond the Basic Multilingual Plane. 

  • An ersatz good. 

  • A deputy for a bishop in granting licences for marriage. 

  • A person or animal that acts as a substitute for the social or pastoral role of another, such as a surrogate parent. 

  • A judicial officer of limited jurisdiction, who administers matters of probate and intestate succession and, in some cases, adoptions. 

verb
  • To replace or substitute something with something else; to appoint a successor. 

adj
  • Of, concerning, relating to or acting as a substitute. 

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