Does minecraft and lego is diffrent?

Yes they are very different. I'll be more specific though.

In Lego, you have a set number of Legos (unless you buy more) to build with.

In Minecraft. You must find your blocks to build with by mining them. There are no limitations, especially if you're playing in Creative Mode on the PC version of the game.

Minecraft is a game and lego is a physical toy.

WELL… First of all, Minecraft is A VIDEO GAME, while Lego IS A ******* TOY