caltrop vs garlic

caltrop

noun
  • The starthistle, Centaurea calcitrapa, a plant with sharp thorns. 

  • A small, metal object with spikes arranged so that, when thrown onto the ground, one always faces up as a threat to pedestrians, horses, and vehicles. 

  • The same object represented as a heraldic charge. 

  • Any of a number of flowering plants in the family Zygophyllaceae, including several members of the genus Kallstroemia and the species Tribulus terrestris, native to warm temperate and tropical regions. 

garlic

noun
  • A plant, Allium sativum, related to the onion, having a pungent bulb much used in cooking. 

  • A preparation from Allium sativum used as a food ingredient or the flavor or other characteristics of such an ingredient. 

verb
  • To flavour with garlic 

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