As a noun average
is (legal|marine) financial loss due to damage to transported goods; compensation for damage or loss.
As an adjective average
is (not comparable) constituting or relating to the average.
As a verb average
is (informal) to compute the arithmetic mean of.
As a letter c is
the third letter of the.
As a numeral c is
cardinal number one hundred (100).
As a symbol c is
carbon.