Here's what the comparison is, in a nutshell: AutoCAD is a general-purpose CAD program. AutoCAD Architecture is an add-on (or toolset) that simplifies architectural drawings by offering a preset list of "objects" such as doors, windows, etc.

In AutoCAD you have to draw everything yourself, line by line. Once you have drawn a plan and decide that a door is really meant to be somewhere else, you are going to have to change everything by hand.

With AutoCAD Architecture creating and moving objects is much simpler.

There is a helpful YouTube video that shows the differences. The video is not exceedingly polished, but it does the job.

YouTube link:

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