Isolate vs Quarantine

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

Isolate

Top 2,000 (common)B2verb

Quarantine

Top 2,000 (common)
 IsolateQuarantine
Pronunciation🇬🇧 /["/ˈaɪsəleɪt/","/ˈaɪsəleɪts/","/ˈaɪsəleɪtɪd/","/ˈaɪsəleɪtɪŋ/"]/🇺🇸 /["/ˈaɪsəleɪt/","/ˈaɪsəleɪts/","/ˈaɪsəleɪtɪd/","/ˈaɪsəleɪtɪŋ/"]/🇬🇧 //ˈkwɒr.ən.tiːn//🇺🇸 //ˈkwɔːr.ən.tiːn//
MeaningTo keep something or someone separate from others.A time when people or animals stay away from others to stop sickness.
ExamplePatients with the disease should be isolated.The doctor recommended a strict quarantine for patients showing symptoms.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2-
Part of speechverb
Collocationsisolate a variable, isolate from others, isolate the problem, isolate the pathogen, isolate oneselfhome quarantine, mandatory quarantine, strict quarantine, quarantine period, quarantine measures
Antonymsconnect, associate, unite-
Common mistakesConfused with 'isolation', the noun form., Using it incorrectly in the passive voice, e.g., 'The virus is isolated by the doctor.', Forgetting to include an object, e.g., 'Please isolate.'Confused with 'isolation', which is more about separation without illness., Used inappropriately in non-medical contexts, like casual settings.
Usage notesUse 'isolate' when referring to removing someone or something from a group or environment. Often used in scientific, medical, or psychological contexts. Avoid in casual conversation unless discussing specific scenarios.Use 'quarantine' in medical or public health contexts. It's not suitable for informal conversations. Be cautious with its implications around illness.

Frequently asked questions: Isolate vs Quarantine

What's the difference between Isolate and Quarantine?

Isolate: To keep something or someone separate from others. Quarantine: A time when people or animals stay away from others to stop sickness.

Can I use Isolate and Quarantine interchangeably?

Not always. Isolate and Quarantine 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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