preeminence vs snob value

preeminence

noun
  • High importance; superiority. 

  • The status of being preeminent, dominant or ascendant. 

snob value

noun
  • The value of an item specifically to individuals of higher income levels, according to the snob effect. 

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