As a spice:
* "Add a pinch of pepper to the soup."
* "I love the flavor of black pepper on my steak."
* "The chef used a variety of spices, including pepper and garlic."
As a plant:
* "The pepper plant produces small, round fruits."
* "We have a pepper plant growing in our garden."
* "The pepper is a member of the nightshade family."
As a substance:
* "The pepper was ground fresh for the meal."
* "He sprinkled a little pepper on his eggs."
* "The pepper stung my nose."
As a place:
* "They are visiting Pepper Island."
* "Pepper is a small town in the Midwest."
In a metaphorical sense:
* "He's got a pepper in his step." (meaning he's full of energy)
* "She's got a bit of pepper in her personality." (meaning she's spunky or lively)
As you can see, "pepper" can be used in many different ways, depending on the context.