Both terms are used to describe blanched almonds that have been ground very finely; the finished consistency is similar to granulated sugar. This product can be purchased already prepared. To make it yourself, you need a high-power food processor in order to achieve the same consistency of the commercial product. If you are making your own almond flour for use in a recipe that contains granulated sugar, add a portion of the sugar to the almonds when you process them to help prevent caking. In any case, be very careful not to allow the almond oil to extrude and form a paste, which will happen if the mixture becomes too warm and/or is overprocessed.