Leaf litter is a common term used to describe the layer of fallen leaves and other organic matter on the forest floor. However, there are several synonyms for this term that can be used interchangeably. Some common ones include leaf debris, forest litter, leaf litter layer, and leaf mulch. These terms all refer to the same layer of decaying organic matter, which is crucial for maintaining the health of the forest ecosystem. By decomposing and recycling nutrients back into the soil, leaf litter plays a vital role in supporting the growth of trees and other plants, as well as providing habitat for a wide range of invertebrates and other wildlife.