na-adjective
Describes something that has existed for a long time, is related to history, or is done in a traditional way. Often used for buildings, events, customs, and records.
この町には歴史的な建物がたくさんある。
This town has many historical buildings.
それは歴史的
That was a historic event.
na-adjective
Emphasizes great importance or influence in history, often used for landmark events, decisions, or achievements.
歴史的な勝利を収めた。
They achieved a historic victory.