It can be an adjective, a noun, or a verb. It is most often an adjective, as in such phrases as, "abstract art", "abstract philosophy", and "abstract noun", but it also has at least two meanings as a noun: An example of abstract art and a short summary of a longer writing.
It can also be an active transitive verb, meaning to remove something from a larger entity, as in, "A free radical can abstract a hydrogen atom from a hydrocarbon, thereby converting the original hydrocarbon into another free radical."
It is an abstract noun.
It is an abstract noun.
It is an abstract noun.
A noun, of the abstract type.
A noun of the abstract type.
A noun of the abstract type.
Noun. It is an abstract noun.
Accuracy is an abstract noun.
Beauty is an abstract noun.
"Resistance" is a noun of the abstract type.
"Technique" is a noun of the abstract type.
It is an abstract noun.