'Spanish guitar' and 'classical guitar' are more or less interchangeable terms. For all practical purposes, there is no real distinction or difference between them.
The term 'Spanish guitar' simply recognizes Spain's unique contribution, both to its development (especially by Torres), and the repertoire with which it is associated. For example, all 3 of my links are works by Spanish composers - De Falla, Tarrega and Rodrigo. Glad you liked 'em btw. Another fav. composer is Albeniz, and Bach also works very well on guitar.
I might post some more links later- if there's a perceived demand. 'Slightly' OT though. Maybe a new forum should be started. After all, there are proven therapeutic benefits to listening to classical music, and for me, the classical guitar is the most beautiful of instruments. Then again, I'm biased.