overly vs singularly

overly

adv
  • To an excessive degree. 

singularly

adv
  • Extremely; remarkably. 

  • In the singular number; in terms of a single thing. 

  • solely; only; uniquely 

  • Strangely; oddly. 

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