motto vs verbalism

motto

noun
  • A sentence, phrase, or word, prefixed to an essay, discourse, chapter, canto, or the like, suggestive of its subject matter; a short, suggestive expression of a guiding principle; a maxim. 

  • A sentence, phrase, or word, forming part of an heraldic achievement. 

verbalism

noun
  • The expression of a concept in words; the wording used in such an expression 

  • The excessive use of words, often with little meaning 

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