heedful of vs notwithstanding

heedful of

notwithstanding

postp
  • In spite of, despite. 

prep
  • In spite of, despite. 

conj
  • Although; despite; even though. 

adv
  • Nevertheless, all the same. 

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