consonant vs vocative

consonant

adj
  • Of or relating to consonants; made up of, or containing many, consonants. 

  • consistent, harmonious, compatible, or in agreement 

  • Harmonizing together; accordant. 

  • Having the same sound. 

noun
  • A sound that results from the passage of air through restrictions of the oral cavity; any sound that is not the dominant sound of a syllable, the dominant sound generally being a vowel. 

  • A letter representing the sound of a consonant. 

vocative

adj
  • Of or pertaining to calling; used in calling or vocation. 

  • Used in address; appellative (said of that case or form of the noun, pronoun, or adjective, in which a person or thing is addressed). For example "Domine, O Lord" 

noun
  • The vocative case 

  • A word in the vocative case 

  • Something said to (or as though to) a particular person or thing; an entreaty, an invocation. 

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