Deadhead vs forlorn

Deadhead

noun

  • A fan of the rock band The Grateful Dead. 

forlorn

noun

  • A member of a forlorn hope. 

  • A forlorn hope. 

adj

  • Abandoned, deserted, left behind. 

  • Unlikely to succeed; hopeless. 

  • Pitifully sad, wretched, miserable; lonely, especially from feeling abandoned, deserted, forsaken. 

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