"Too" and "very" are both adverbs used to intensify or emphasize the degree of something, but they have distinct differences in their usage and meaning.

"Very" is used to express a high degree or level of something. It amplifies the quality or quantity of an adjective or adverb. For example, you might say, "The movie was very entertaining," to indicate a high level of enjoyment. "Very" is commonly used in positive statements to emphasize the positive qualities of something.

On the other hand, "too" is used to indicate an excessive or negative degree of something. It suggests that a certain quality or quantity exceeds a desired or acceptable limit. For instance, you might say, "The coffee is too hot to drink," meaning that the temperature is beyond what is comfortable or safe. "Too" is often used in negative or critical statements to highlight an undesirable or problematic aspect.

In summary, "very" is used to intensify a positive quality, while "too" indicates an excessive or negative quality. The choice between the two depends on the context and the intended meaning of the statement.