Atheism vs. Agnosticism — What's the Difference?

Atheism, in the broadest sense, is an absence of belief in the existence of deities. Less broadly, atheism is a rejection of the belief that any deities exist.

Agnosticism is the view that the existence of God, the divine, supernatural, or ultimate reality is either unknown or unknowable. If the question is "Does God exist?", "yes" would imply theism, "no" would imply atheism.

Disbelief or lack of belief in the existence of God or gods.

The doctrine that certainty about first principles or absolute truth is unattainable and that only perceptual phenomena are objects of exact knowledge.

Disbelief in or denial of the existence of God or gods.

The belief that the existence or nonexistence of a deity or deities cannot be known with certainty.

(narrowly) Belief that no deities exist (sometimes including rejection of other religious beliefs).

The view that absolute truth or ultimate certainty is unattainable, especially regarding knowledge not based on experience or perceivable phenomena.

(broadly) Rejection of belief that any deities exist (with or without a belief that no deities exist).

The view that the existence of God or of all deities is unknown, unknowable, unproven, or unprovable.

(very broadly) Absence of belief that any deities exist (including absence of the concept of deities).

Doubt, uncertainty, or scepticism regarding the existence of a god or gods.

(historical) Absence of belief in a particular deity, pantheon, or religious doctrine (notwithstanding belief in other deities).

(by extension) Doubt, uncertainty, or scepticism regarding any subject of dispute.

The disbelief or denial of the existence of a God, or supreme intelligent Being.

That doctrine which, professing ignorance, neither asserts nor denies.

Godlessness.

A religious orientation of doubt; a denial of ultimate knowledge of the existence of God;

The doctrine or belief that there is no God

The disbelief in any claims of ultimate knowledge

A lack of belief in the existence of God or gods