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In philosophy and the arts, a fundamental distinction is between things that are abstract and things that are concrete. While there is no general consensus as to how to precisely define the two, examples include that things like numbers , sets , and ideas are abstract objects, while plants , dogs , and planets are concrete objects. [ 1 ]
Abstract syntax, which only consists of the structure of data, is contrasted with concrete syntax, which also includes information about the representation. For example, concrete syntax includes features like parentheses (for grouping) or commas (for lists), which are not included in the abstract syntax, as they are implicit in the structure.
The nature of the language being produced—abstract or concrete—affects the engagement of visual, visual, spatial working memory components. Abstract language, such as metaphors or theoretical concepts, places a greater demand on verbal working memory due to the need to synthesize non-physical, conceptual relationships. [29]
Abstraction uses a strategy of simplification, wherein formerly concrete details are left ambiguous, vague, or undefined; thus effective communication about things in the abstract requires an intuitive or common experience between the communicator and the communication recipient. This is true for all verbal/abstract communication.
Object abstraction, or simply abstraction, is a concept wherein terms for objects become used for more abstract concepts, which in some languages develop into further abstractions such as verbs and grammatical words (grammaticalisation). Abstraction is common in human language, though it manifests in different ways for different languages.
In a language that supports inheritance, an abstract class, or abstract base class (ABC), is a class that cannot be directly instantiated. By contrast, a concrete class is a class that can be directly instantiated. Instantiation of an abstract class can occur only indirectly, via a concrete subclass.
Embodied theories of language comprehension assume that abstract concepts, as well as concrete ones, are grounded in the sensorimotor system [4] [14] Some studies have investigated the activation of motor cortices using abstract and also concrete verbs, examining the stimulation of the motor cortices when comprehending literal action verbs ...
//By default, all methods in all classes are concrete, unless the abstract keyword is used. public abstract class Demo {// An abstract class may include abstract methods, which have no implementation. public abstract int sum (int x, int y); // An abstract class may also include concrete methods. public int product (int x, int y) {return x * y;}} //By default, all methods in all interfaces are ...