This is the 4317th most frequent Japanese word.
別名
"別名" means "alias" or "alternative name."
In this sentence, 別名 (betsumei) means 'alias' or 'pseudonym', referring to a different name employed for a specific purpose, often to conceal identity.
彼は別名を使って活動していた。
He was operating under a pseudonym.
Here, 別名 (betsumei) denotes an 'alias' or 'alternative name' for something, such as a nickname or title for a city.
この都市の別名は「千年の都」です。
The alternative name for this city is 'The Millennium Capital'.
In this context, 別名 (betsumei) refers to a 'moniker' or 'title' awarded to an individual or their works, providing additional identity or recognition.