teasing vs tongue-in-cheek

teasing

noun

  • The act of teasing; making fun of or making light of. 

tongue-in-cheek

adv

  • With irony. 

adj

  • Not intended seriously; jocular or humorous. 

How often have the words teasing and tongue-in-cheek occurred in a corpus of books? (source: Google Ngram Viewer )