go-ahead vs graduated

go-ahead

adj
  • Dashing; energetic. 

  • Progressive; exerting leadership. 

  • Being a score which gives the scoring team or player the lead in the game. 

noun
  • Approval, agreement, or instruction to begin or proceed. 

graduated

adj
  • Having a university degree; having completed training. 

  • Arranged by grade, level, degree. 

  • Increasing in rate with the taxable base. 

  • Of a tail, having successively longer feathers towards the middle. 

  • Marked with graduations. 

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