Which term describes a writer's or speaker's choice of words?

The term that specifically refers to a writer's or speaker’s choice of words is diction. Diction encompasses the vocabulary selections made, the level of formality, and the clarity of expression. It directly influences how a message is conveyed and can significantly impact the audience's perception and interpretation of the content.

For instance, a writer may choose formal diction in an academic paper, using precise language and sophisticated vocabulary, while opting for informal diction in a personal blog, creating a conversational tone. This conscious selection shapes the overall effectiveness of communication.

The other terms relate to different aspects of writing. Style refers to the distinctive manner in which a writer expresses thoughts, which includes choices of diction but also involves syntax and tone. Syntax pertains to the arrangement of words and phrases to create well-formed sentences, emphasizing the structure rather than individual word choice. Tone conveys the attitude or emotional quality of the writing, which is influenced by diction but focuses more on the overall feeling presented rather than the specific words chosen.