Glowworms are fascinating insects that emit bioluminescent light to attract prey and mates. There are several different synonyms that can be used to describe these unique creatures. One option is "luminous beetles," which highlights their ability to produce light. "Fireflies" is another common synonym, as both insects use their glow to attract mates and are often found in similar habitats. "Lampyridae" is the scientific family name that encompasses glowworms and fireflies, making it a more technical synonym. Finally, "lightning bugs" is a colloquial term for fireflies that can be used interchangeably with glowworms to describe these glowing insects.