While:
While is a period of time. While is a word in English language that functions both as noun and as a subordinating conjunction. Its meaning varies largely based on its intended phrase and even writer or speaker’s regional dialect.
Whilst:
Whilst mean during the time that something else happens. In American English and Canadian English, whilst is considered to be pretentious or archaic.
Differences:
| Basis | While | Whilst |
|---|---|---|
| Definition (www.oxforddcitionaries.com) | Look at or observe attentively over a period of time. | While |
| Synonyms | Although, during, in the time and at the same time | As long as, hourly, meantime, when |
| Antonyms | Incontinent, moment and swarn | |
| Part of Speech | Noun | Conjunction |
| Pronunciation |
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| Word origin | The word while was used before 12th century from Middle English. | The word whilst was used in the 14th century from Middle English whilst, alteration of whiles. |
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