The difference lies in the different Chinese medicinal materials. Almond refers to the seeds in the fruit of the apricot tree. It is a common Chinese medicinal material. It has the effects of moistening the lungs and relieving coughs, resolving phlegm and quenching thirst, and laxative. Ophiopogon japonicus refers to the rhizome of Ophiopogon japonicus, a plant of the Ophiopogonaceae family. The traditional Chinese medicinal materials made by drying the aerial parts of it have the functions of clearing away heat and detoxifying, nourishing yin and moistening the lungs, producing body fluids and quenching thirst.