Cool MateIllness vs Infection
When to use each in English, with meaning, register, and examples.
| Illness | Infection | |
|---|---|---|
| Meaning | Being sick or not healthy. | When germs or bacteria get into the body and make you sick. |
| CEFR level | A2 | B2 |
| Part of speech | noun | noun |
| Usage notes | Commonly used in both spoken and written English. Appropriate in medical contexts and everyday conversations. Avoid using in slang or very casual settings. | Use 'infection' in medical or health contexts. It's appropriate for conversations with healthcare professionals or when discussing illnesses. Avoid using it in casual or non-serious discussions. |
Frequently asked questions: Illness vs Infection
What's the difference between "Illness" and "Infection"?
"Illness" means: Being sick or not healthy. "Infection" means: When germs or bacteria get into the body and make you sick.
When should I use "Illness" and "Infection"?
They can all be used in everyday English.
Are "Illness" and "Infection" the same CEFR level?
"Illness" is at A2, "Infection" is at B2 on the CEFR scale.