light globe vs onion

light globe

noun
  • A light bulb. 

  • A nearly evacuated glass globe containing ionized gas (plasma), which produces lightning-like patterns when touched. 

onion

noun
  • The bulb of such a plant. 

  • A monocotyledonous plant (Allium cepa), allied to garlic, used as vegetable and spice. 

  • The genus Allium as a whole. 

  • An ounce. 

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