punishing vs struggleful

punishing

adj

  • Debilitating, harsh. 

  • That punishes physically and/or mentally; arduous, gruelling, demanding. 

noun

  • Punishment. 

struggleful

adj

  • Full of struggle; difficult, hard. 

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