A context menu is a menu on a user interface (typically a GUI), such as the right-click function in computing. The context menu offers a range of options, such as creating folders, for example.

Menu-driven interfaces continue to be popular because they are easier to figure out and work with than command-line interfaces, with frequently cryptic and hard to recall commands and option selections.

affective computing!

"Distributed" or "grid" computing in general is a special type of parallel computing, it is advanced in the means of using distributed computing.

Cloud computing is better then normal grid computing as its cheaper to buy, use and maintain. Cloud computing can offer web hosting also which grid computing can not.