noun
Refers to a commercial establishment or the business itself, often with a traditional or established feel.
この通りには古い商家が並んでいる。
Old merchant shops line this street.
彼は小さな商家を営んでいる。
He runs a small shop.
noun
merchant house; merchant family
Refers to a family or household engaged in commerce, often with a long-standing tradition.
彼は商家の生まれだ。
He comes from a merchant family.