loon vs schizophrenic

loon

noun
  • A crazy or deranged person; a lunatic. 

  • A boy, a lad. 

  • Any of various birds, of the order Gaviiformes, of North America and Europe that dive for fish and have a short tail, webbed feet and a yodeling cry. 

  • An English soldier of an expeditionary army in Ireland. 

  • A simpleton. 

  • A harlot; mistress. 

schizophrenic

noun
  • A person suffering from schizophrenia. 

adj
  • Having qualities that strongly jar or are at odds. 

  • Of or relating to schizophrenia. 

  • Exhibiting more than one personality; having a wildly changeable personality. 

  • Afflicted with schizophrenia; having difficulty with perception of reality. 

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