A watche’s basic complication will be based on anything that is considered advanced, such as advanced functionality, calendars, alarms, world tine zones, etc. The term Chronograph in these situations will usually refer to a type of watch that has "stop watch" details to it - most likely two to three "dials" on the side of the watch which is for things like hours, minutes and seconds. Whereas something like an analog is pretty simply put a watch that has two time hands on a dial which stand for hour and minute - no extras in this watch as far as dials go.
The chronograph watches you find on the market will also have "three" dials on the face as well, whereas a regular watch usually won't have something this fancy. Also, there is such a thing as a digital watch with dials that keep hours, minutes and seconds as well just like the chronograph does - these are called digital chronographs!
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