But there is a significant distinction in the two views. This from Wikipedia:
Agnosticism is the view that the
truth value of certain claimsespecially claims about the existence or non-existence of any
deity, but also other religious and
metaphysical claimsis unknown or unknowable.
[1] Agnosticism can be defined in various ways, and is sometimes used to indicate doubt or a
skeptical approach to questions. In some senses, agnosticism is a stance about the similarities or differences between
belief and
knowledge, rather than about any specific claim or belief.
Atheism, in a broad sense, is the rejection of
belief in the
existence of deities.
[1] In a narrower sense, atheism is specifically the position that there are no
deities.
[2] Most inclusively, atheism is simply the absence of belief that any deities exist.
[3] Atheism is contrasted with
theism,
[4] which in its most general form is the belief that at least one deity exists.
[5][6]