loon vs spoony

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. 

spoony

noun
  • A foolish, simple, or silly person. 

  • A foolishly amorous person. 

adj
  • Feebly sentimental; gushy. 

  • Enamored in a silly or sentimental way. 

  • Similar to a spoon 

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