This book comes in two formats:
Here is a sample entry from the PIANO CHORD DICTIONARY:
The C chord is comprised of white keys. It is the first chord you should learn. It is also called “C major.” This same chord may use a variety of chord symbols in sheet music, such as C ma and C maj. As a beginner, think of it as the center of the universe.
The actual PIANO CHORD DICTIONARY includes lots of other valuable information that will help you learn to play piano, such as suggested right hand placement, and acceptable chord substitutions for more complex chords. All the terminology that you will encounter in popular music chord symbols is explained in simple terms that anyone can understand, and see in the diagrams such as the one above.