Vermiculite is a mineral that is commonly used in various industries, such as agriculture, construction, and insulation. However, there are several synonyms for vermiculite that can be used to describe similar minerals or materials. Some of the synonyms for vermiculite include phlogopite, biotite, muscovite, perlite, and zeolite. Phlogopite and biotite are both forms of mica that are chemically similar to vermiculite. Muscovite is also a form of mica, but it has different properties and uses. Perlite is a volcanic glass that is often used as a substitute for vermiculite in horticultural applications. Lastly, zeolite is a naturally occurring mineral that has similar properties to vermiculite and is often used as a soil conditioner.