Am I an Atheist?

[One Above All]

Deism and pantheism are subsets of theism. Theism is belief in one or more deities, whatever form the believer thinks they might take. Atheism is lack of belief in deities. In other words, if you're not a theist, by default, you're an atheist.
However, there are agnostic and gnostic atheists, and agnostic and gnostic theists. Agnostics (by which I mean agnostic atheists and agnostic theists - "agnostic" on its own is a meaningless label) aren't sure if deities exist, but agnostic atheists still lack belief in them, and agnostic theists believe in them. Gnostics (again, gnostic atheists and gnostic theists, as the term "gnostic" is meaningless on its own) are certain deities exist, and they either believe (gnostic theists) in them or they don't (gnostic atheists).