filthily vs grossly

filthily

adv
  • in a filthy manner 

grossly

adv
  • In a gross (disgusting) manner; without delicacy. 

  • Greatly; to a large degree, especially one large enough to be frankly appreciable. 

  • To a serious, severe, or offensive degree. 

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