This is the 472nd most frequent Japanese word.
経
"経" (kei) means "sutra," "longitude," or "to pass through/manage."
経由する means to pass through or go by way of a location.
劇の終了後、舞台を経由して帰りました。
After the play ended, I returned via the stage.
経ています refers to having undergone or experienced a certain period or condition.
この村は古い歴史を経ています。
This village has undergone an old history.
経済 directly refers to economics or the economic system.