labor at vs overplay

labor at

overplay

verb
  • To play (a song or record) too frequently. 

  • To accidentally hit (one's golf ball) beyond "the green". 

  • To overestimate one's strength in a game or event, which ultimately may end in a defeat. 

  • To overdo or overact one's effect or role. 

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