labial vs viva

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. 

viva

noun
  • An oral examination, typically for an academic qualification. 

  • A shout of applause. 

verb
  • To subject to an examination of this kind. 

intj
  • Long live ... ! (used to express acclaim or support). 

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