po-faced vs prissy

po-faced

adj
  • Wearing a particularly stern and disapproving expression; humourless; priggish. 

  • Poker-faced. 

prissy

adj
  • Excessively prim, proper, particular or fussy. 

  • Very feminine or dressy. 

  • Well-mannered, well-behaved. 

noun
  • A person who is excessively prim, proper, particular or fussy. 

How often have the words po-faced and prissy occurred in a corpus of books? (source: Google Ngram Viewer )