circumambient vs patina

circumambient

adj
  • Surrounding. 

  • Including all aspects of; encompassing. 

adv
  • in a circumambient manner 

patina

adj
  • Of a green colour, tinted with grey, like that of bronze patina. 

noun
  • The colour or incrustation which age and wear give to (mainly metallic) objects; especially, the green rust which covers works of art such as ancient bronzes, coins and medals. 

  • A green colour, tinted with grey, like that of bronze patina. 

  • A paten, flat type of dish. 

  • A gloss or superficial layer. 

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