 Linguists have long distinguished between mass and count nouns on grammatical grounds and that distinction is close to the sortal vs non-sortal distinction philosophers deploy. Count nouns form plurals and occur in constructions involving “How many …” Mass nouns do not pluralize and occur in constructions involving “How much …?” We ask how many cats our friend owns and how much cat food. Some words, especially those involving food, have both a mass and a count sense. We can ask both how many chickens our friend owns and how much chicken you want for dinner. (See Pelletier (1979, 2010), as well as the entries on the logic and the metaphysics of mass expressions, for detailed discussions on the mass-count distinction, from philosophical, linguistic, and cognitive perspectives.)