When describing a physical object, there are a variety of synonyms to choose from. Some options include tangible object, material item, concrete thing, solid item, palpable entity, and visible thing. Other possible synonyms include physical item, sensory object, tangible piece, corporeal thing, and substantial article. These terms all convey the idea of an object that can be touched, seen, and experienced through the senses. It's important to choose the right synonym depending on the context and the desired effect. For example, using the word "concrete" can add a sense of immovability and solidity to the object being described.