cherish vs look after

cherish

verb
  • To treat with affection, care, and tenderness; to nurture or protect with care. 

  • To have a deep appreciation of; to hold dear. 

look after

verb
  • To care for; to keep safe. 

  • To follow with the eyes; to look in the direction of (someone or something departing). 

  • To seek out, to look for. 

  • To have as one's business; to manage, be responsible for. 

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