Sulfuric and Sulfurous

Sulfuric adjective - Of or relating to or containing sulfur.

Sulfurous and sulfuric are semantically related in sulfate topic. In some cases you can use "Sulfurous" instead a noun "Sulfuric", when it comes to topics like sulphur, sulfur.

Sulfurous adjective - Of or related to or containing sulfur or derived from sulfur.

Sulfuric and sulfurous are semantically related in sulfate topic. You can use "Sulfuric" instead the word "Sulfurous" as an adjective or a noun, if it concerns topics such as sulphur, sulfur.