noun
trade name; store name; business name
Refers to the name under which a business operates, especially a sole proprietorship or small shop. Distinct from a registered company name (会社名).
祖父の店の屋号は「山田商店」です。
My grandfather's shop's trade name is 'Yamada Shoten'.
個人事業主は屋号で銀行口座を開設できる。
A sole proprietor can open a bank account under their trade name.
noun
stage name; professional name
Used for performers, actors, and traditional artists. Similar to 芸名 but 屋号 can also refer to a family or troupe name in kabuki and other traditional arts.
歌舞伎役者は代々同じ屋号を名乗ることがある。
Kabuki actors sometimes carry on the same stage name for generations.
彼の屋号は師匠から受け継いだものだ。
His stage name was inherited from his master.
Compound of 屋 (ya, 'shop' or 'house') and 号 (gō, 'name' or 'title'). The kanji 家 (ie, 'house/family') in the rare variant 家号 reflects the traditional association with a family business or artistic lineage.