from the heart vs unaffected

from the heart

adv

  • passionately 

  • sincerely 

unaffected

noun

  • Someone not affected, as by a disease. 

adj

  • Lacking pretense or affectation; natural. 

  • Not affected or changed. 

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