foster vs whip up

foster

verb
  • To cultivate and grow something. 

  • To nurture or bring up offspring, or to provide similar parental care to an unrelated child. 

  • To nurse or cherish something. 

adj
  • Related by such care. 

  • Receiving such care. 

  • Providing parental care to children not related to oneself. 

noun
  • A foster parent. 

  • The care given to another; guardianship. 

whip up

verb
  • To produce (something) quickly, especially food. 

  • To lift or snatch up suddenly. 

  • To beat (stir) (a liquid) quickly so to introduce air and form foam. 

  • To arouse or excite. 

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