dexterous vs time-served

dexterous

adj
  • Skillful in some specific thing. 

  • Agile; flexible; able to move fluidly and gracefully. 

  • Skillful with one's hands. 

time-served

adj
  • Having completed an apprenticeship or period of training, thus acquiring skills. 

  • Having completed many years of service. 

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