Reply #145: There are multiple definitions of both words. [View All]

[Fumesucker]

You are choosing a single definition of both words and ignoring the other definitions.

I do not believe in god, any god whatsoever.

That makes me an atheist, literally "without belief in god".

I do not believe it is possible to know with certainty whether or not there is a god.

That makes me an agnostic, literally "without proof or disproof of the existence of god".

http://en.wikipedia.org/wiki/Agnosticism

Agnosticism (Greek: α- a-, without + γνώσις gnōsis, knowledge; after Gnosticism) is the philosophical view that the truth value of certain claims — particularly metaphysical claims regarding theology, afterlife or the existence of deities, ghosts, or even ultimate reality — is unknown or, depending on the form of agnosticism, inherently impossible to prove or disprove.

http://en.wikipedia.org/wiki/Atheism

Atheism, as an explicit position, can be either the affirmation of the nonexistence of gods,<1> or the rejection of theism. It is also defined more broadly as an absence of belief in deities, or nontheism.

Edited for clarity.