One of the most common misconceptions in the electrical world is the difference between a GFCI receptacle and a GFI outlet.
There is actually no difference at all.
A common conversation when discussing receptacles may be referring to a ground fault circuit interrupter (GFCI) as simply a ground fault interrupter (GFI). They are generally the exact same thing.
Although this may be a confusing concept for those unfamiliar with electrical products you cannot go wrong with either terms. Though, many electricians may more commonly use GFCI receptacle as opposed to GFI receptacle in dialogue.