hardship vs take to heart

hardship

verb
  • To treat (a person) badly; to subject to hardships. 

noun
  • Difficulty or trouble; hard times. 

  • A burden, a source of difficulty that could impose a barrier. 

take to heart

verb
  • To feel keenly; be greatly grieved at; be much affected by something. 

  • To take something seriously; to internalize or live according to something (e.g. advice.) 

How often have the words hardship and take to heart occurred in a corpus of books? (source: Google Ngram Viewer )