Definition: The word "fever" refers to a high body temperature, typically over 103°F (38°C) in the upper body, but may be variable depending on the individual's metabolism and other factors. It can also refer to an extremely high fever that persists for more than two weeks after an infection. On the other hand, the word "dream" is a state of consciousness in which one experiences vivid dreams or images during sleep. Dreams are often associated with thoughts, feelings, emotions, and sensations, and they occur at various times throughout the night or during waking hours. The difference between fever and dream lies in their cause - fever is caused by an infection, while dream is not directly related to a medical condition but rather an internal state of consciousness that occurs during sleep. Therefore, it's important to note that fever can be caused by both physical illness and psychological issues, while dreams are the result of a natural bodily process occurring as part of the sleep cycle.