labial vs related

labial

adj
  • Of or pertaining to the lips or labia. 

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

  • Furnished with lips. 

  • On the side facing the lips. See mesial. 

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. 

related

adj
  • Narrated; told. 

  • Fulfilling a relation. 

  • Standing in relation or connection. 

  • Being a relative of. 

  • Synonym of relative. 

  • Having a relationship with the thing named 

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