noun
protective tariff
A tariff imposed to protect domestic industries from foreign competition.
政府は国内産業を守るために保護関税を導入した。
The government introduced protective tariffs to safeguard domestic industries.
関税 is a general term for customs duties or tariffs, while 保護関税 specifically refers to tariffs intended to protect domestic industries.
Compound of 保護 (protection) and 関税 (tariff).