Additive vs Supplement

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

Additive

Top 5,000 (fairly common)

Supplement

Beyond 10,000 (less common)C1noun
Most common: Additive
 AdditiveSupplement
Pronunciation🇬🇧 //ˈædɪtɪv//🇺🇸 //ˈædɪtɪv//🇬🇧 /["/ˈsʌplɪmənt/"]/🇺🇸 /["/ˈsʌplɪmənt/"]/
MeaningSomething that helps or improves another thing.Something added to help or improve something else.
ExampleMany food products contain an artificial **additive** to enhance flavor.The textbook serves as a supplement to the main course material.
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Beyond 10,000 (less common)
CEFR level-C1
Part of speechnoun
Collocationschemical additive, food additive, additive manufacturing, additive property, synthetic additiveuseful, valuable, colour/​color, provide (somebody/​something with), add, take, supplement to, useful, valuable, colour/​color, provide (somebody/​something with), add, take, supplement to, useful, valuable, colour/​color, provide (somebody/​something with), add, take, supplement to, additional, extra, $100, add, charge, carry, be payable, at a supplement, supplement for, supplement on
Antonymssubtractive, decreasingreduction, diminution, lessening
Common mistakesConfusing with 'addict' - they have different meanings., Using 'additive' as a verb instead of an adjective., Forgetting the context when referring to food versus chemicals.Confused with 'complement', which means something that completes another., Using it as a verb when referring to physical items instead of additional support.
Usage notesOften used in contexts related to food, chemicals, or materials. More common in scientific and technical discussions than in everyday conversation.Used in contexts related to health, nutrition, and finance. Avoid in casual conversations unless discussing specific dietary needs or financial advice.

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Additive

Frequently asked questions: Additive vs Supplement

What's the difference between Additive and Supplement?

Additive: Something that helps or improves another thing. Supplement: Something added to help or improve something else.

Which is more common: Additive and Supplement?

Additive is the most common in everyday English.

Can you show an example of each?

Additive: Many food products contain an artificial **additive** to enhance flavor. Supplement: The textbook serves as a supplement to the main course material.

Can I use Additive and Supplement interchangeably?

Not always. Additive and Supplement 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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