Is there a difference between the main menu key and home key on Android? Or are they same? The phone in question is the Canvas 2 a110 from Micromax, which you can see here.
The home key takes you to the home screen (the screen which you see when you start up the phone). The menu key displays, well, a menu of options which change depending on the app and screen.
In the menu we can see all applications we had installed in our mobile but in the home page we will found only some applications we had kept..
Some mobiles have the same softkey that take turns working as home and menu. when you are at home, it works as menu and when you are the menu - the list of apps, then it works as home. But the mobile you have linked here clearly shows that it only acts as home button. when you touch it, wherever you are at the moment, your are taken to the home of the mobile, even if you are running an app or at the menu.
Are you talking about the Menu and Home soft keys? The Menu key brings up the options menu, while the Home key takes you to the Home screen unless held down for a couple seconds where it brings up the last used apps that are held in cache or running in the background.