cereal vs particle

cereal

noun
  • The grains of such a grass. 

  • A type of grass (such as wheat, rice or oats) cultivated for its edible grains. 

  • Breakfast cereal. 

particle

noun
  • A part of speech which cannot be inflected. 

  • A little bit. 

  • A very small piece of matter, a fragment; especially, the smallest possible part of something. 

  • Any of various physical objects making up the constituent parts of an atom; an elementary particle or subatomic particle. 

  • A part of speech that has no inherent lexical definition but must be associated with another word to impart meaning, often a grammatical category: for example, the English word to in a full infinitive phrase (to eat) or O in a vocative phrase (O Canada), or as a discourse marker (mmm). 

  • In the Roman Catholic church, a crumb of consecrated bread; also the smaller breads used in the communion of the laity. 

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