Trier is a city in Germany located on the banks of the Moselle River. It is known for its many historical monuments, including the Porta Nigra, a Roman city gate, and the Cathedral of Trier, which dates back to the 4th century. The term 'Trier' can also refer to two different occupations: an Essayer (7 letters) and a BATTLER (7 letters). An Essayer is someone who tests or evaluates something, while a BATTLER is someone who fights or struggles against something.