There are currently 2 names in this directory beginning with the letter A.
An Albedo Map is basically an Image texture without any shadows or highlights.
Take the image below as an example. On the left, we have a picture of a brick wall with shadows and highlights and on the right, these shadows and highlights are missing. The image on the right is an Albedo Map.
Side by side comparison of a regular Photo and an Albedo Map.
Ambient occlusion is a shading and rendering technique used to calculate how exposed each point in a scene is to ambient lighting. For example, the interior of a tube is typically more occluded (and hence darker) than the exposed outer surfaces, and becomes darker the deeper inside the tube one goes.