The best means subjectively to the readers. An abstraction is good only the readers can grasp what it means (seems every instance that the reader can think of fits to the description/abstraction), but cannot create one instance from it directly.
For example, Cat, is a good abstraction, Human Being, is another one.
Every instance (in your mind when you see those words) fit the abstraction, but you cannot use that term to create an instance.
I would argue that there are "Better Abstraction" only, there is no "best" (yet)
An example of an abstract noun is knowledge.
is the variable of x an example of abstract representation
Yes, 'example' is an abstract noun; a word for a concept, not a physical thing.
Love is an example of abstract language, as it represents a concept or feeling that cannot be touched or seen.
A written abstract is a summary or condensation of a treatise, statement, or text.
ab for example ab-normal
"Love" is an example of abstract language as it represents a complex concept or emotion that is not easily defined or tangible.
Some example of abstract nouns that are principles are:democracydisciplinefreedomhonestyhonorintegrityjusticelibertyloyaltyvalor
Some example of abstract nouns that are principles are:democracydisciplinefreedomhonestyhonorintegrityjusticelibertyloyaltyvalor
The noun example is a singular, common, abstract noun.
Yes, the word 'example' is an abstract noun; a word for a thing characteristic of its kind or illustrating a general rule; a word for a concept.
Example sentence for the abstract noun 'courage':I do not have the courage to tell lies.