草地 (cǎo dì) means a grassy area like a lawn, meadow, or grassland. It refers to the land covered with grass, not the grass plant itself (草 cǎo). Compared to 草原 (cǎo yuán 'prairie/steppe'), 草地 is smaller and more general; 草坪 (cǎo píng) is specifically a manicured lawn in a garden or park.