Forecast vs Prediction

When to use each in English, with meaning, register, and examples.

Forecast

Top 1,000 (very common)B2noun

Prediction

Top 2,000 (common)B1noun
Most common: Forecast
 ForecastPrediction
Pronunciation🇬🇧 /["/ˈfɔːkɑːst/"]/🇺🇸 /["/ˈfɔːrkæst/"]/🇬🇧 /["/prɪˈdɪkʃn/"]/🇺🇸 /["/prɪˈdɪkʃn/"]/
MeaningA prediction about what will happen in the future, especially about the weather.A guess about what will happen in the future.
ExampleThe weather forecast predicts heavy rain tomorrow.The weather prediction for tomorrow shows a chance of rain.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB2B1
Part of speechnounnoun
Collocationsgood, optimistic, gloomy, prepare, produce, give, call for something, predict something, say something, forecast about, forecast for, forecast ofaccurate, correct, good, make, give, offer, prove something, turn out to be something, be borne out, amid predictions, contrary to a/​the prediction, despite a/​the prediction
Antonymsretrospect, ignore, neglectretrospect, surprise
Common mistakesConfusing 'forecast' with 'foresee', which means to predict based on intuition., Using 'forecast' as a noun and forgetting the verb form., Mispronouncing it as 'fore-cast' instead of 'fore-kast'.Confusing with 'forecast' — weather-related predictions versus general predictions., Using 'predictions' as a verb — it's a noun., Inaccurately using 'prediction' in informal settings.
Usage notesUsed primarily in discussions about weather or market trends. It is considered neutral and can be used in both formal and informal contexts. Avoid in casual conversations unless discussing specific predictions.Use 'prediction' in formal contexts like science or statistics. It's less common in casual conversation. Avoid using it for more personal or emotional guesses.

Frequently asked questions: Forecast vs Prediction

What's the difference between Forecast and Prediction?

Forecast: A prediction about what will happen in the future, especially about the weather. Prediction: A guess about what will happen in the future.

Which is more common: Forecast and Prediction?

Forecast is the most common in everyday English.

Are Forecast and Prediction the same CEFR level?

Forecast: B2, Prediction: B1 on the CEFR scale.

Can I use Forecast and Prediction interchangeably?

Not always. Forecast and Prediction are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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