semasiological vs viva voce

semasiological

adj

  • Of or pertaining to semasiology. 

  • Of or pertaining to the meaning of a lexeme. 

viva voce

adj

  • By word of mouth. 

noun

  • An oral examination. 

adv

  • By word of mouth. 

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