How many patterns can be formed with a single bit?

A good answer might be:

Two ― 0 and 1 (or "off" and "on", or "false" and "true", or ...)

Patterns of Bits

A bit can be 0 or 1. With one bit there are two possible patterns. How many patterns can be formed with two bits? Here is a complete list: 

        0 0
        0 1
        1 0
        1 1

Looks like 4 patterns.

QUESTION 2:

Is the pattern 0 1 different from the pattern 1 0?