* Addition: "I like apples and oranges." (both apples and oranges are liked)
* Simultaneity: "He walked and talked." (both actions happened at the same time)
* Contrast: "She's small and strong." (there's a contrast between her size and strength)
* Consequence: "He studied hard and passed the exam." (studying hard led to passing the exam)
The meaning of "and" depends on the context in which it is used.
To understand what "and" means in a specific sentence, you need to consider the surrounding words and the overall meaning of the sentence.