Clove is an herb. People use the oils, dried flower buds, leaves, and stems to make medicine. Clove is used for upset stomach and as an expectorant. Expectorants make it easier to cough up phlegm. Clove oil is used for diarrhea, hernia, and bad breath. Clove and clove oil are used for intestinal gas, nausea, and vomiting.
Excretion. Excretion is the process by which waste products of metabolism and other non-useful materials are eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell.
To put it very simply, excretion is the removal of toxic substances and metabolic wastes, meaning that all living organisms engage in some form of excretion. In plants, that takes the form of gaseous excretions and water; in animals, it's generally gases, fluids, and solid wastes. Cells (like the cells of your body) and simple-celled organisms (such as single-celled amoebas, yeasts, and bacteria) engage in molecular excretion.