labial vs phonetic

labial

noun
  • A consonant articulated by the lips. 

  • An organ pipe having a lip that influences its sound. 

  • Any of the scales bordering the mouth opening of a reptile. 

adj
  • Articulated by the lips, as the consonants b, m and w. 

  • Furnished with lips. 

  • Of or pertaining to the lips or labia. 

  • On the side facing the lips. See mesial. 

phonetic

noun
  • In such writing systems as the Chinese writing system, the portion of a phono-semantic character that provides an indication of its pronunciation; contrasted with semantic (which is usually the radical). 

adj
  • Relating to the spoken rather than written form of a word or name, as opposed to orthographic. 

  • Relating to phones (as opposed to phonemes). 

  • Relating to the sounds of spoken language. 

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