"Palu" is a word that refers to a specific type of hammer or mallet that is typically used to strike tools or materials. Some common synonyms for this word include "maul," "sledgehammer," "club hammer," or simply "hammer." Other related terms might include "thumper," "beater," or "drumstick" depending on the context of the usage. These synonyms can be useful when describing different types or sizes of hammers, or when trying to convey different levels of force or impact. Ultimately, the best synonym for "palu" will depend on the specific circumstances and the speaker's preference for word choice.