stadion

As a proper noun colosseum

is the largest stadium in the roman empire, located near the center of rome.

As a noun stadion is

stadium (venue where sporting events are held).

Stadium is a related term of stadion.

As nouns the difference between stadion and stadium

is that stadion is a Greek unit of measurement, equivalent to six plethra or six hundred podes, which, though varying in precise length, is generally accepted to be equivalent to approximately 185·4 metres while stadium is a venue where sporting events are held.

As nouns the difference between station and stadion

is that station is the fact of standing still; motionlessness, stasis while stadion is a Greek unit of measurement, equivalent to six plethra or six hundred podes, which, though varying in precise length, is generally accepted to be equivalent to approximately 185·4 metres.

As a verb station

is to put in place to perform a task.