STOKELYのブログ

What're the differences?

手機閱讀可改成電腦版，善用文章分類可看其他同分類的相關文章

Here is a webpage which can let us figure them out.
http://sense.pixnet.net/blog/post/6243822

「猜測，可能是因為地域性的關係，而開展出不同的文化語用；被傳承下來，保留完整的，就是今日我們所見到的這些字了。至於在本篇文章一開始還有提到的『ya』，我大約在 10 年前看過台灣有人在BBS上這樣打，表示『yes』，應該是錯誤的，是訛用。『yap』的意思是，像狗一樣狂吠。當然，如果言者想要表示自己在學狗吠，當然可以用『yap』囉！（學豬是 oink，以前在美國看人家用過）」

Just like my teacher, Stephen said.

Yup is the most correct word, which means Yes.
And Yep, we sometimes use it.
Yup is 60%, and Yep is 40%.

Yap is like a sound.
It doesn't mean anything.

Yape is the word which doesn't exist.
The wrong word.

So, we should use the most correct word.
YUP!!!!