euchologion vs lexicon

euchologion

noun
  • A book of prayers or religious ritual. 

lexicon

noun
  • A set of vocabulary specific to a certain subject. 

  • A dictionary of Classical Greek, Hebrew, Latin, or Aramaic. 

  • The lexicology of a programming language. (Usually called lexical structure.) 

  • Any dictionary. 

  • A list thereof. 

  • A dictionary that includes or focuses on lexemes. 

  • The vocabulary used by or known to an individual. (Also called lexical knowledge.) 

  • The vocabulary of a language. 

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