ocular vs seeable

ocular

adj
  • Seen by, or seeing with, the eye; visual. 

  • Of, or relating to the eye, or the sense of sight 

  • Resembling the eye. 

noun
  • Any of the scales forming the margin of a reptile's eye. 

  • The eyepiece of a microscope or other optical instrument. 

seeable

adj
  • Able to be seen; visible. 

noun
  • That which is to be seen. 

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