As verbs the difference between period and ages
is that
period is (obsolete|intransitive) to come to a period; to conclude while
ages is .
As an adjective period
is appropriate for a given historical era.
As an interjection period
is (chiefly|north america) and nothing else; and nothing less; used for emphasis.
As a noun period
is (obsolete|medicine) the length of time for a disease to run its course.