flaring vs heated

flaring

noun
  • The deliberate open-air burning of natural gas that is generated as a by-product of various petrochemical processes, especially oil extraction; gas flaring. 

  • The act of something that flares. 

heated

adj
  • Made warm or hot by some means. 

  • To get riled up about something, or to be in a state of anger. 

  • Very agitated, angry or impassioned. 

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