Translation guide
The economic policy of restricting imports to protect domestic industries. In Japanese, this is most commonly expressed with the loanword プロテクショニズム or the native term 保護貿易主義.
Referring to the general concept of protectionism in economics or politics.
The standard native Japanese term for protectionism, literally 'protective trade principle'. Used in formal and academic contexts.
Protectionism is a policy that restricts imports to protect domestic industries.
The loanword from English, commonly used in economic discussions. Slightly more casual than 保護貿易主義 but still formal.
In recent years, protectionist movements have been growing stronger.
Means 'protectionist policies'. 保護主義 is a shorter form of 保護貿易主義, often used in compounds.
That country adopted protectionist policies.
Both are widely understood. 保護貿易主義 is the native term and may be preferred in very formal writing or speeches. プロテクショニズム is a direct loanword and is common in news and economic analysis. They are interchangeable in most contexts.