Respirator or ventilator?
respirator is a noun meaning “A device to assist breathing”; ventilator is a noun meaning “A device that circulates fresh air and expels stale or noxious air”. In written English (wordfreq, 2021 data) ventilator is about 2.0 times as common as respirator.
What is the difference between respirator and ventilator?
| respirator | ventilator | |
|---|---|---|
| Part of speech | noun | noun |
| Meaning | A device to assist breathing A face mask with an integrated filter or filters to keep out harmful dusts, fumes, and mists | A device that circulates fresh air and expels stale or noxious air A machine that moves breathable air into and out of the lungs of a patient who is unable to breathe sufficiently |
| Example | Any N95 respirator is designed to filter out 95 percent of particles 0.3 microns or larger | Near-synonym: respirator |
| Forms | respirators | ventilators |
| Pronunciation | not recorded | /ˈvɛntɪleɪtə/ |
| In writing | about once in every 2 million words | about once in every 1 million words |
Sources: respirator and ventilator in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Every current meaning of respirator and ventilator
respirator
- 1
A device to assist breathing
- 2
A face mask with an integrated filter or filters to keep out harmful dusts, fumes, and mists
Any N95 respirator is designed to filter out 95 percent of particles 0.3 microns or larger
ventilator
- 1
A device that circulates fresh air and expels stale or noxious air
- 2
A machine that moves breathable air into and out of the lungs of a patient who is unable to breathe sufficiently
Near-synonym: respirator
- 3
Some behaviour or happening that relieves a tense atmosphere or situation
Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.
Which is more common, respirator or ventilator?
respirator appears about once in every 2 million words; ventilator about once in every 1 million words.
respirator about once in every 2 million wordsventilator about once in every 1 million words
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How many people search respirator vs ventilator?
“respirator vs ventilator” is searched about 2,900 times a month on Google and 30 on Bing in the United States. Google counts close variants of a query together (“ventilator vs respirator”, “respirator or ventilator”).
Sources: Google Ads keyword data through DataForSEO and Microsoft Advertising keyword data through DataForSEO, the average month from September 2025 to August 2026.