See the different pip values amongst different currency pairs.  Enter the number of Forex lots and scroll through the currency pairs.  Notice the difference in exchange rates.  

Forex Contract Sizes

Standard Lot = $100,000
Mini lot = $10,000
Micro lot = $1,000

But the margin you are required to put up is:

Standard Lot = $1,000
Mini lot = $100
Micro lot = $10

A Pip (or points) is the name used in the Forex market to indicate the base increment move an exchange rate makes (does not apply to micro lots or mini lot terminology). 

One basis point is 0.0001 in the case of EUR/USD, GBD/USD, USD/CHF and is .01 in the case of USD/JPY.  Although your broker may now use .00001 and .001 respectively in their price quotes.

"Lot" or "Contract" are the terms used for the standard unit of trading on certain exchanges.