pensile vs up in the air

pensile

adj

  • Hanging down, suspended. 

up in the air

adv

  • Used other than figuratively or idiomatically: see up, in, the, air. 

adj

  • Not yet resolved, finished, answered, decided or certain. 

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