feedforward vs figure on

feedforward

verb
  • To respond in advance 

noun
  • An anticipatory response to expected changes in the environment of a system 

figure on

verb
  • To plan or expect (something). 

  • To account for or rely on a particular fact or notion; to calculate (something) using a set of facts. 

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