acetous vs gustable

acetous

adj
  • Having a sour taste; sour; acid. 

  • Causing, or connected with, acetification 

gustable

adj
  • Having a taste; capable of being tasted. 

  • Pleasant to the taste; toothsome; savory. 

noun
  • Something edible. 

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