discoverable vs seen

discoverable

adj
  • Subject to legal discovery; able to be requested by an opposing party through a legal process such as a subpoena. 

  • Able to be discovered. 

seen

verb
  • simple past tense of see; saw. 

  • To understand, to comprehend. 

noun
  • The letter س in the Arabic script. 

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