The noun 'pizza' is a singular, common, concrete noun; a word for a thing.
Concrete. (You can see it, feel it, bite it!)
No, the compound noun 'Pizza Hut' is a proper noun, the name of a business and a corporation.A proper noun is the name of a person, place, or thing. Pizza Hut is a thing.
The noun 'cafeteria' is a concrete noun as a word for a physical place.
concrete
The noun pizza is a countable noun; one pizza, two pizzas.
Concrete. (But few bathtubs are made out of concrete.)
The noun 'Philadelphia' is a concrete noun, a word for a physical place.
The noun 'oranges' is the plural form for the noun orange, a common, concrete noun; a word for a thing.
The compound noun pizza shop does not have an adjective form. The word pizza is used as a noun adjunct (attributive noun) in terms such as pizza delivery and pizza parlor.
No, the word pizza is a common noun. A proper noun is the name of a specific person, place, thing, or a title. The noun Domino's Pizza is a proper noun because it's the name of a specific pizza.
The noun 'kind' is an abstract noun. There is no form for kind that is a concrete noun.