what is the diferrence between cannot and can not?

Both are same. Both cannot and can not are acceptable spellings, but the first is much more usual. You would use can not when the ‘not’ forms part of another construction such as ‘not only.’ please see the link: http://www.dailywritingtips.com/cannot-or-can-not/ I understand that 'cannot' is one word and should be used when the intended meaning is the negative of 'can'. For example, "I cannot swim." "Can not" can only be used in this type of a sentence: "He can not only speak English but also Japanese." However, I see more and more people using "can not". Is it becoming acceptable to use "can not" or is it still considered incorrect to use it instead of "cannot"? please see http://www.usingenglish.com/forum/ask-teacher/14944-use-cannot-vs-can-not.html

One is the incorrect spelling of the other all the best urban

@.@. Why must you post this on here? You can ask people near you. With me, it is not problem cannot or can not. Just say it, everyone could understand -- that enough.