Asimilarity between tariffs and sanctions is that both are sometimes used to

A similarity between tariffs and sanctions is that both are sometimes used to  punish other nations.

Explanation:

Tariffs are percentages of tax that must be paid when making an import or export to a certain country. Generally, these tariffs are imposed to encourage the consumption of national production, or as a form of punishment for various economic measures of the tariffed country. In one case or another, tariffs make the product more expensive, hindering the commercial relationship and, in cases of economic inequality between the two countries, harming the minor country by prohibiting trade. An example of a tariff is Trump's tax on all Chinese exports by a percentage of 25%, which made Chinese products more expensive in America and discouraged their consumption, thus damaging the economy of the Asian country.

In turn, economic sanctions are punishments that governments impose on other nations for their conduct within the sphere of international relations, whether political or economic. Here there is no commercial exchange, but the sanction goes beyond and is applied whether or not trade. An example of an economic sanction is the freezing of bank accounts of the sanctioned country located in the sanctioning country.

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