hit home vs strike a chord

hit home

verb
  • To be especially memorable, meaningful, or significant; to be fully understood, believed or appreciated. 

  • To strike its target with damaging effect. 

strike a chord

verb
  • To convey a feeling or meaning which someone personally internalizes and takes to heart. 

  • To elicit a significant reaction, especially one which is favorable or sympathetic. 

How often have the words hit home and strike a chord occurred in a corpus of books? (source: Google Ngram Viewer )