The Master Necromancer - Vol 1 - Chapter 45

When all of these things were done about the home Skraal took a deep breath and went to his "Underground Base"

There are more than two weeks for the "Zone" to open he right now wanted to improve his Origin ability.

The difference between magical spells and "Origins" is too big and many of the powerful beings accepted the "Origins" as the real power of theirs

For example, Skraal has "Ghost Origin 0.2" this means that he does not need to know and understand about the "Ghosts" with more understanding of the "Ghost Origin" he could even cast "Ghost Type Spells" without having them.

In this section calling these supernatural abilities as "Spells" is not a true thing because when a person has an understanding and improves his "Origin Ability" of said, "Topic" which is "Ghost", he could control, use "Ghost" as much as he wants.