piker vs waif

piker

noun
  • One who refuses to go out with friends, or leaves a party early; a spoilsport or "chicken". 

  • One who bets or gambles only with small amounts of money. 

  • A soldier armed with a pike, a pikeman. 

  • An amateur. 

  • A stingy person; a cheapskate. 

  • One who pikes (quits or backs out of a promise). 

  • A tramp; a vagrant. 

  • A bullock living in the wild. (Also used attributively.) 

waif

noun
  • A person (especially a child) who is homeless and without means of support; also, a person excluded from society; an outcast. 

  • A plant introduced in a place outside its native range but is not persistently naturalized. 

  • A very thin person. 

  • Something found, especially if without an owner; something which comes along, as it were, by chance. 

  • A small flag used as a signal. 

  • Something (such as clouds or smoke) carried aloft by the wind. 

verb
  • To cast aside or reject, and thus make a waif. 

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