Pyriform is an adjective that describes something as having the shape of a pear. However, there are several other words that can be used to describe the same shape. "Ovoid" is used to describe an object that is egg-shaped, while "oblong" refers to something that is elongated with rounded ends. "Bulbous" is another synonym for pyriform, describing something that is round and full at one end, tapering to a narrow stalk at the other. Finally, "pear-shaped" itself can be used to describe an object with a wider base tapering to a narrower top, such as a vase or a wine glass.