popular vs thematic

popular

adj
  • Pertaining to or deriving from the people or general public. 

  • Liked by many people; generally pleasing, widely admired. 

  • Common among the general public; generally accepted. 

  • Adapted to the means of the common people; cheap. 

  • Concerning the people; public. 

  • Aimed at ordinary people, as opposed to specialists etc.; intended for general consumption. 

noun
  • A person who is popular, especially at a school. 

  • An inexpensive newspaper with wide circulation. 

  • A member of the Populares 

thematic

adj
  • Relating to, or having a theme (“subject”) or a topic. 

  • Relating to a melodic subject. 

  • Of or relating to a theme (“subdivision of the Byzantine empire”). 

  • Of a word stem, ending in a vowel that appears in or otherwise influences the noun or verb's inflection. 

noun
  • A postage stamp that is part of a thematic collection. 

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