superhuman vs unfamiliar

superhuman

noun

  • A human being with remarkable abilities or superpowers. 

adj

  • Beyond what is possible for a human being. 

unfamiliar

noun

  • An unfamiliar person; a stranger. 

adj

  • Strange, not familiar. 

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