Inflammation of the lungs and bronchial tubes are also common causes of shortness of breath, as is injury to the respiratory tract caused by smoking or other toxins. Shortness of breath may occur with injury to the lungs, such as a collapsed lung (pneumothorax).
In the United States, pea soup without qualification usually means a perfectly smooth puree. Split Pea Soup is a slightly thinner soup with visible peas, pieces of ham or other pork, and vegetables (most commonly carrots) and is usually made from dried, green split peas.
Peas belong to the same family as beans and lentils. They are set apart by their common usage. Most peas that are sold fresh are also available in their dried form. Dried peas are sometimes also called field peas and include split peas (green and yellow), black-eyed peas, pigeon peas, and chick-peas. The peas that are grown to be sold fresh are not the same as those that are cultivated for their mature seeds, which are dried. The mature seeds are higher in starch.