Pancakes, by broad definition, include any flat, pan-fried cake that is flipped in order to complete cooking. They are nearly always round (unless you're into fancy pancake art) and are cooked on an oiled griddle or frying pan. Pancakes may be leavened or unleavened, and can be sweet or savory; a list which includes everything from potato latkes to french crepes. Hotcakes are a specific type of pancake; however, from what I can tell, what you call your hotcakes depends a lot upon where you're from. In many parts of the United States, the terms pancakes, flapjacks, griddlecakes, and hotcakes are used interchangeably.  American hotcakes (or breakfast pancakes) usually include milk, eggs, flour, and fat (i.e., butter, oil, etc.), and they also always includes a leavening agent, making them rise and puff up when cooked. (In contrast, British pancakes are often unleavened and resemble a crêpe.) All that said, my mother was from Missouri, and was particular about things like this. She would tell you that the recipe shared here is for "Hot Cakes" (two words) and they look and taste nothing like their flat, thin pancake cousins.