cooking with gas vs delightful

cooking with gas

phrase
  • Functioning particularly effectively; achieving something substantial. 

  • With the updated software, I was really cooking with gas. I got the project done in half the time. 

  • Used other than figuratively or idiomatically: see cook, with, gas. 

delightful

adj
  • Pleasant; pleasing, bringing enjoyment, satisfaction, or pleasure. 

How often have the words cooking with gas and delightful occurred in a corpus of books? (source: Google Ngram Viewer )