fussy vs unchallenging

fussy

adj
  • Having a tendency to fuss, cry, or be bad-tempered/ill-tempered (especially of babies). 

  • Anxious or particular about petty details; hard to please. 

  • Having much unnecessary detail or decoration. 

unchallenging

adj
  • Not challenging; easy to do. 

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