What is the difference between dictation and diction?

Dictation is the act of speaking words so that they are written down. Diction is the manner in which words are pronounced. The two words look alike and people mix them up in searches and spelling tests, but they name different things. Dictation is about writing. Diction is about speech and, in one specialist sense, about style.

Dictation is the act of speaking words to be written down

Cambridge defines dictation, as an uncountable noun, as the activity of dictating something for someone else to write down ¹. Merriam-Webster defines it as the act or manner of uttering words to be transcribed, and also as the material that is dictated ². Both definitions put the words in the speaker's mouth and the writing somewhere else, with a typist, a stenographer or a piece of software.

That is also the sense behind modern voice typing. When you dictate a text message, you are doing dictation: you speak, and the words land in the text box. For the full picture, read what is dictation.

Diction is how words are pronounced

Diction is a noun about sound. Cambridge defines it as the manner in which words are pronounced ³. The Oxford Advanced Learner's Dictionary gives the same core sense as the way that somebody pronounces words ⁴.

In practice, a speaker with clear diction is easy to follow. A speaker with unclear diction slurs or drops sounds, so listeners have to work harder. Diction describes the speaker's articulation, not the text that comes out of a dictation tool.

Diction also means word choice in literature

The Oxford entry gives a second, specialist sense: the choice and use of words in literature ⁵. A critic might say a poet's diction is plain or formal, meaning the vocabulary and phrasing. This is the only sense in which diction is about writing, and it is about the choice of words rather than the act of recording them.

This is the sense that causes the most confusion, because it sounds like a writing word. If you are reading about a novel's style, diction means its word choice. If you are reading about a tool that writes what you say, the word you need is dictation.

Dictation is not pronunciation, but clear speech helps

People also search for dictation against pronunciation. Dictation does not teach you to say words correctly. It turns the sounds you make into written words, so the clearer your speech, the better the tool can work. Apple advises that you speak clearly at a volume that is neither too quiet nor too loud, and that you avoid background noise when you use Dictation on a Mac ⁶.

Pronunciation matters most when a tool has to write an unusual name or a word from another language. If a tool keeps mishearing one, the question on dictating foreign names and words lists what to try. Background noise, distance from the microphone and the wrong language setting can also cause errors, and how to dictate explains how to set up a clean recording.

Classroom dictation is a test of listening and writing

There is one more sense of dictation that is not about speech at all. In language classes, a dictation is a test in which a piece of writing is dictated to students learning a foreign language ⁷. The teacher reads a passage aloud, and the students write it down. The test checks listening and spelling, since the student has to hear each word and write it correctly. If your search came from a school assignment, that is the sense you need, and what does take dictation mean covers the office version.

Quick guide to the three words

The rule of thumb is simple. If the word is about writing something down, it is dictation. If it is about how a voice sounds, it is diction. If it is about vocabulary in a book, it is diction in the literary sense. For the subject of speaking to a computer, start at the dictation overview, and see is dictate a noun or a verb for the grammar of the family.