The noun luggage is a common, concrete, mass noun.
Yes, the noun 'cloud' is a concrete noun; a word for a visible mass of condensed vapor or smoke; a word for a physical thing.
The noun 'aluminum' is a common, concrete, uncountable (mass) noun; a word for a metallic element; a word for a thing.
The noun 'continents' (the plural form of 'continent') is a common noun, a general word for a large mass of land.The noun 'continents' is a concrete noun, a word for a physical thing.
The noun 'electricity' is an mass (uncountable), common, concrete noun; a word for a type of energy; a word for a thing.
The noun continents is a concretenoun, the plural form of the singular noun continent; a word for a physical mass of land.
Concrete. (You can see it, feel it, bite it!)
Concrete is a noun category for something physical; a concrete noun.The noun concrete is a material noun, a noun for something used to make other things.The noun concrete is a non-count (mass) noun for a substance; the plural form is used only for types of concrete.The noun concrete is a common noun, a word for any concrete.Concrete is a compound, a mixture of water, cement, and aggregate; a building material used for its strength and endurance.
The noun 'cafeteria' is a concrete noun as a word for a physical place.
Door to success is an abstract noun. It depends
the popcorn = common noun The noun popcorn is a common, compound, concrete, mass (uncountable) noun; a word for a substance, a thing.
Concrete. (But few bathtubs are made out of concrete.)