The word "yet" is a conjunction and adverb used to indicate that something has not happened up to a certain point in time but is expected to happen. It can also express contrast, showing that something is true despite a previous expectation. For example, in the sentence "She hasn't finished her homework yet," it implies that the homework is still incomplete but may be completed soon. In addition to its use in time-related contexts, "yet" can also highlight unexpected outcomes. For instance, in the phrase "He is young, yet very wise," it contrasts youth with wisdom, suggesting that wisdom is not typically associated with being young. This dual function makes "yet" a versatile word in English.