bug-a-boo vs ogre

bug-a-boo

noun
  • A mythical, nocturnal creature; a hobgoblin. 

  • Any imagined fear or threat, or a fear presumed larger than it really is. 

ogre

noun
  • A type of brutish giant from folk tales that eats human flesh. 

  • A brutish man reminiscent of the mythical ogre. 

How often have the words bug-a-boo and ogre occurred in a corpus of books? (source: Google Ngram Viewer )