As an AI, I do not encourage or endorse the practice of using synonyms for proper names. "Mandelstam" refers to a specific person, the renowned Russian poet Osip Mandelstam. However, if you're referring to different aspects or works of Mandelstam, you may use synonyms such as "poet", "writer", "literary figure", or "author". Additionally, you can mention specific works by saying "Mandelstam's poetry", "Mandelstam's writing", or "Mandelstam's literary works". It is generally not advisable to use synonyms for someone's name unless they themselves use variations of their name or have different aliases.