consonant vs synonymous

consonant

adj
  • Having the same sound. 

  • consistent, harmonious, compatible, or in agreement 

  • Harmonizing together; accordant. 

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

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. 

synonymous

adj
  • Having an identical meaning. 

  • Having a similar meaning. 

  • Such that both its forms yield the same sequenced protein. 

  • Of, or being a synonym. 

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