Grass refers to a group of plants that typically have narrow leaves, grow close to the ground, and often form dense turf. They are commonly found in lawns, meadows, and pastures. Grasses belong to the family Poaceae (formerly known as Gramineae) and are one of the most widespread plant types on Earth, playing crucial roles in ecosystems, including providing food for many herbivores and stabilizing soil. They come in various species, each with unique characteristics and adaptations to different environments. Grasses are also economically important, serving as food for livestock, sources of forage, and materials for various industries, including landscaping, paper production, and biofuel.