organoleptic vs perceptual

organoleptic

adj
  • Of or pertaining to the sensory properties of a particular food or chemical, the taste, colour, odour, and feel. 

noun
  • Such a property 

perceptual

adj
  • Relating to perception. 

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