Which component of a sentence is one of the two main constituents?

The predicate is one of the two main components of a sentence, alongside the subject. The subject of a sentence refers to who or what the sentence is about, while the predicate provides information about the subject, typically including the verb and any additional information related to the action or state of being. For example, in the sentence "The dog barks," "the dog" is the subject, and "barks" is part of the predicate, describing what the subject is doing. The predicate can also include objects, complements, and modifiers that provide further detail about the action or the subject. Understanding the role of the predicate is crucial for constructing complete and coherent sentences, as it helps to convey the full thought or message intended by the speaker or writer.