(up) in the air vs on ice

(up) in the air

on ice

prep
  • Not being used; temporarily unavailable or suspended; on hold. 

  • Of a sporting or other contest: in a state of assured victory for the leading contestant. 

  • Of an entertainment normally performed on a stage: performed by ice skaters as an ice show. 

  • Used other than figuratively or idiomatically: see on, ice. 

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