The word "sage" primarily means a person who is profoundly wise, often someone distinguished for wisdom, sound judgment, and prudence. It can also refer to advice that is wise and thoughtful. Additionally, "sage" is the name of a plant with grayish-green leaves often used in cooking and home remedies. So, "sage" can be a noun meaning a wise person or a plant, and it can be an adjective describing something wise or showing good judgment.