as

> As
(chemical symbol)
arsenic.

> as (1)
(adverb)
equally; for instance; when related in a certain way.

> as (1)
(conjunction)
in the same way that; while; when; because.

> as (1)
(preposition)
in the role or function of.

> as (2)
(noun)
(pl asses) a Roman weight equivalent to the libra or pound; a Roman copper coin.