Gold-containing is an adjective that describes something which contains gold. However, there are numerous synonyms that can be used in place of this word depending on the context. Some of the common synonyms include gold-laden, auriferous, and gold-rich. Gold-bearing and gold-filled are also commonly used to describe any substance that contains gold. Another option is to use a phrase such as "gold-infused," "gold-imbued," or "gold-enriched" to describe something that has been treated or enhanced with gold. Regardless of which synonym is used, the meaning of the word remains the same - the presence of gold.