flatter vs sit on

flatter

verb
  • To portray someone to advantage. 

  • To compliment someone, often (but not necessarily) insincerely and sometimes to win favour. 

  • To enhance someone's vanity by praising them. 

  • To encourage or cheer someone with (usually false) hope. 

noun
  • Someone who flattens, purposely or accidently. Also flattener. 

  • Someone who lives in a rented flat. 

  • A type of set tool used by blacksmiths. 

  • A flat-faced fulling hammer. 

  • A drawplate with a narrow, rectangular orifice, for drawing flat strips such as watch springs. 

sit on

verb
  • To restrain (a person). 

  • To take no action on; to hold in reserve without actually using. 

  • To hold an official inquiry regarding; to deliberate about. 

  • To block, suppress, restrain. 

  • To be a member of. 

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

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