flimsy vs opaque

flimsy

adj
  • Weak; ill-founded. 

  • Likely to bend or break under pressure. 

noun
  • A banknote. 

  • Skimpy underwear. 

  • A service certificate 

  • Thin typing paper used to make multiple copies. 

opaque

adj
  • Obtuse, stupid. 

  • Neither reflecting nor emitting light. 

  • Allowing little light to pass through, not translucent or transparent. 

  • Describes a type for which higher-level callers have no knowledge of data values or their representations; all operations are carried out by the type's defined abstract operators. 

  • Unclear, unintelligible, hard to get or explain the meaning of. 

verb
  • To make, render (more) opaque. 

noun
  • Something which is opaque rather than translucent. 

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