Jimmy vs thingum

Jimmy

noun
  • Shortened form of Jimmy Riddle, a piddle, a piss. 

name
  • A colloquial (potentially unfriendly or disparaging) way of addressing any male whose name is unknown to the speaker. 

  • A diminutive of the male given names James or Jim, also used as a formal given name. 

  • A prime mover powered by a two-stroke Detroit Diesel engine. 

thingum

noun
  • Synonym of thingummy 

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