How is semantics best described?

Semantics is best described as the understanding of the meanings and use of words. This aspect of language focuses on interpreting not just the definitions but also the nuances and contexts in which words are utilized. Semantic knowledge allows individuals to grasp the relationships between words, discern multiple meanings based on context, and apply vocabulary appropriately in communication.

The other choices focus on different linguistic components. For instance, forming complete sentences relates more to syntax, which is the structure and rules governing the arrangement of words. Using language in social settings refers to pragmatics, the study of how context influences the interpretation of communication. Lastly, using articulators in pronunciation pertains to phonetics and articulation rather than semantics, as it involves the physical production of sounds rather than their meaning. Understanding semantics is crucial for effective communication because it directly impacts comprehension and the ability to convey ideas accurately.