frumpish vs obsolete

frumpish

adj
  • Poorly dressed; wearing drab, lifeless, ill-fitting clothing, or being clothing of this kind. 

obsolete

adj
  • Imperfectly developed; not very distinct. 

  • No longer in use; gone into disuse; disused or neglected (often in favour of something newer). 

verb
  • To cause to become obsolete. 

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