Sweet marjoram is a popular perennial herb that's commonly used in cooking and herbal remedies. It's sweet and fragrant taste makes it a preferred choice in many delicious dishes. This herb is also known by some synonyms, including Pot Marjoram, Knotted Marjoram, and Oregano. Pot marjoram is often used as a spice in stews, soups, and meat dishes. Knotted marjoram, on the other hand, is preferred as an ointment for rheumatic pains, while oregano is commonly known for its use in pizza and pasta sauce. Regardless of the synonym you prefer, sweet marjoram remains a top herb with many health benefits.