idiom vs verbalism

idiom

noun
  • An established phrasal expression whose meaning may not be deducible from the literal meanings of its component words. 

  • An artistic style (for example, in art, architecture, or music); an instance of such a style. 

  • A manner of speaking, a mode of expression peculiar to a language, language family, or group of people. 

  • A programming construct or phraseology that is characteristic of the language. 

  • A language or language variety; specifically, a restricted dialect used in a given historical period, context etc. 

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 idiom and verbalism occurred in a corpus of books? (source: Google Ngram Viewer )