Mericarp is a botanical term that refers to each of the individual units that make up a fruit containing seeds. There are several other synonyms for mericarp that can be used interchangeably depending on the context. Some of these synonyms include carpel, follicle, nutlet, pod, and samara. Carpels specifically refer to the female reproductive organs of flowering plants, which often produce mericarps. Follicles are elongated, hollow mericarps that open at maturity to release their seeds. Nutlets are small, hard-shelled mericarps, while pods are larger, elongated ones. Samaras are winged mericarps commonly found in Maple trees. Each of these terms are commonly used in botanical studies and literature related to plants, making it important to understand them.