go-ahead vs high-octane

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. 

high-octane

adj
  • High powered, energetic, forceful or dynamic. 

  • Having a high octane number, good anti-knock characteristics; used in high performance vehicles. 

  • Highly intoxicating or caffeinated. 

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