The term EARTH CLUMP can be broken down into two words, 'EARTH' and 'CLOD'. The word 'EARTH' refers to the planet we live on, while 'CLOD' is a four-letter word meaning a lump or mass of soil or clay. EARTH clumps are lumps of soil or clay that are found in the ground. They are usually made up of a combination of minerals, organic matter, and water. EARTH clumps are important for providing nutrients to plants and helping to retain moisture in the soil.