very slight difference. Just as picture and pitcher have a slight difference. I noticed the British have a more clear pronunciation of these subtleties than us North Americans. I would not overly concern myself over it. The content of the word in the sentence will give the listener the correct meaning. Good luck.

The answer is: No and Yes The root of this problem is that the 'w' sound - which is not a true consonant - has a strange effect on the following vowel sound, and the spelling/pronunciation rules which apply to other words unfortunately don't apply to words with 'w' sounds in them (and this includes the word 'one', which begins with a 'w' sound) The 'No' Answer: The majority of native speakers pronounce 'one' and 'won' differently. Omri is right in saying that 'one' is pronounced (by most people at least) the same as in the word 'want'. In other words, it's an 'o' sound - the same as in 'hot'. I'm not sure what Omri means by saying 'won' is pronounced the same as it's written. 'The same as it is written' would suggest that it's an 'o' sound. 'Won' is not pronounced with an 'o' sound - it's an 'u' sound - the same as 'cup'. It rhymes with both 'son' and 'sun', also with 'done' and 'fun'. If you use the IPA alphabet, it's the vowel sound that looks like an upside-down 'v'. So, in other words, anyone who thinks that the words 'one' and 'won' are both pronounced with an 'o' sound (like the name 'John') is wrong. 'One' rhymes with 'John'. 'Won' rhymes with 'sun'. The 'Yes' answer: There are certain accents in which 'one' rhymes with 'sun' and 'fun'. In fact, at least in traditional British English, this is seen as more correct, though it is possibly a little old-fashioned now. I remember my English language schoolteachers telling me that this was the correct pronunciation. So if you pronounce 'one' to rhyme with 'fun' , then yes, they are the same. But if you pronounce 'one' to rhyme with 'John', then no, they aren't the same. 'Won' always rhymes with 'fun'. I hope that answers your question!

Yes - you can say something like "one person has won the gold medal for tennis" and both the words one and won would have the exact same pronunciation. (English native speaker)

No, one is pronounced as "wan" like in the word "want". Won pronounced just like it's written, for example the word "won't".

In the United States, as far as I know, they are pronounced the same, and both of them rhyme with sun and fun. This is certainly true in the region where I grew up, the Northeast, and I'm not aware of any regional variation although there could certainly be some. The desk dictionary I use, American Heritage Dictionary 3rd Edition, the word "one" is shown with a single pronunciation "wŭn," same "u" sound as in the word "cut." "Won," entry #3, "past tense and past participle of 'win,'" is also shown with only one pronunciation, the same, "wŭn." (Entry #1 is an archaic meaning I didn't know, "to dwell or abide," and entry #2 is a unit of Korean currency). From what Su.Ki says, I gather this is not true in the UK.