Tea filters are a crucial component for making the perfect cup of tea. They come in various sizes and shapes, and they are designed to strain the tea leaves or herbs from the hot water. There are several synonyms that you can use to describe a tea filter, such as infuser, strainer, teabag, sieve, and colander. Infusers are small containers with a perforated lid that allow the tea to be brewed without the leaves or herbs floating in the water. Strainers are similar to infusers, but they don't have a container. Teabags are pre-packaged filters that contain a specific amount of tea. Sieves and colanders are used when making tea in larger quantities, such as for a tea party or event.