One is the production process, and the other is the font.

Wrong gold is a manufacturing process. The process of inlaying one material (such as copper) with another material (such as gold) and then polishing the surface. According to different materials, there can be wrong gold, wrong silver, wrong copper and so on. It can also be named after copper and silver.

Bronze inscriptions are an ancient font. It's actually a general concept. Generally, the characters after the unification of Qin Dynasty are called Xiao Zhuan, and the previous seal scripts (characters) are called Da Zhuan. Bronze inscription is one of the so-called big seal scripts, which is named because it is more common in bronze inscriptions, in which the golden character refers to metal.

The inscription on the "Oroqen Flag Festival" you mentioned is of course a bronze inscription (not to say that it is made of gold), and the technology is wrong. It's just a coincidence. If silver was used at that time, this festival symbol was also called bronze inscription.