The noun 'string' is a singular, common, concrete noun, a word for a thing.
The noun 'up' is a singular, common, noun. The noun 'up' is a concrete noun as a word for a physical direction. The noun 'up' is an abstract noun as a word for a positive situation or period of time.
The noun figure is a singular, common noun, which can be a concrete noun for a written number, the shape of something, a geometrical shape; and an abstract noun when referring to an important person (a prominent figure).
Examples of abstract/concrete noun combinations are:birthday cake; the noun 'birthday' is an abstract noun as a word for a concept; the noun 'cake' is a concrete noun as a word for a type of food.card game; the noun 'card' is a concrete noun as a word for a small piece of cardboard marked with characters; the noun 'game' is an abstract noun as a word for a concept.computer science; the concrete noun 'computer' as a word for an electronic unit; the noun 'science' as a word for a concept.marriage license; the noun 'marriage' is an abstract noun as a word for a concept; the noun license is a concrete noun as a word for a document.
The noun 'Celt' is a countable noun; the plural form is Celts.The noun 'Celt' is a concrete noun; a word for a person.
eyes = a plural, common, concrete noun. eye = singular, common, concrete noun.
The word tomato is a singular, common, concrete noun; a word for a thing.
Meteorite is a common concrete noun
common noun
Air is a common, concrete noun.
Air is a common, concrete noun.
The noun children is a plural, common noun, concrete noun.
The noun fiber is a singular, common, concrete noun.
The noun 'paper' is a singular, common, concrete noun.
The noun scientist is a singular, concrete, common noun.
cd player is a concrete noun.
"Document" is a singular, common, concrete noun.