abstract
There is no abstract noun form of the concrete noun leaf, a word for a physical object.
The word blindness is an abstract noun.
The noun 'ruthlessness' is an abstract noun, a word for a lack of pity or compassion; a word for a concept.
The word 'unfriendly' is an adjective a word that describes a noun. Adjectives are not classified concrete or abstract. The noun form for the adjective is 'unfriendliness', which is an abstract noun.
abstract
The noun 'hunger' is a concrete noun, a word for a physical condition, a physical sensation.The noun 'hunger' is an abstract noun as a word for a desire or a need; a word for an emotion.
The word 'independence' is an abstract noun, a word for a concept.
Examples of abstract, concrete noun combinations:Statue of Liberty (statue is a concrete noun; liberty of an abstract noun)science building (science is an abstract noun; building is a concrete noun)bargain basement (bargain is an abstract noun; basement is a concrete noun)the noun 'air' is a concrete noun as a word for the substance that surrounds the earth; the noun 'air' is an abstract noun as a word for the ambiance of a place.the noun 'heart' is a concrete noun as a word for an organ of the body; the noun 'heart' is an abstract noun as a word for the essence of something.the noun 'edge' is a concrete noun as a word for the sharp side of a blade; the noun 'edge' is an abstract noun as a word for an advantage.
There is no abstract noun form of the concrete noun leaf, a word for a physical object.
Concrete noun
The noun 'noun' is an abstract noun, a word for a concept.
The homograph word for "not abstract" is concrete. In this case, "concrete" means something that is specific, tangible, or physical, as opposed to being abstract or theoretical.
The word blindness is an abstract noun.
There is no concrete noun for the abstract noun 'education'. The noun 'education' is a word for a concept; an idea.
The noun 'truth' is an abstract noun, a word for a concept.
The noun 'ruthlessness' is an abstract noun, a word for a lack of pity or compassion; a word for a concept.