It litteraly means son of John, where John would be the name of the father and -son means "son".
Thus; John's son = Johnson.
Johnson is not a traditionally Swedish name. It is of English origin and is commonly found in English-speaking countries such as the United States and the United Kingdom.
"Am" as in "I am" is "är" in Swedish.
Du means you in Swedish.
Har means has in Swedish.
It means Mr in Swedish.
Camilla doesn't mean anything in Swedish, it's just a name (for women). It's not of Swedish origin.
Neah doesn't mean anything in Swedish, but it might be a name?
It's an English name... It doesn't mean anything in Swedish.
Nothing, there's no such word in Swedish.
It's not a Swedish word.
Froken means Miss in Swedish.
"stad" means city in Swedish.