bad blood vs strife

bad blood

noun
  • A serious feud or long-standing grudge. 

  • Feelings of hostility or ill will. 

  • A particular disease; in some places, syphilis. 

strife

noun
  • Bitter conflict, sometimes violent. 

  • A trouble of any kind. 

  • Striving; earnest endeavor; hard work. 

  • Exertion or contention for superiority, either by physical or intellectual means. 

How often have the words bad blood and strife occurred in a corpus of books? (source: Google Ngram Viewer )