* Contrast: "The first book was a lighthearted romance, whereas the second was a dark thriller."
* Comparison: "The old model was bulky and slow, whereas the new one is sleek and fast."
* Legal/Formal: "Whereas the defendant has pleaded guilty to the charges, the court hereby sentences them to..."
* Emphasize a Difference: "My sister loves spicy food, whereas I prefer bland dishes."
Key Point: "Whereas" is used to introduce a contrasting idea or situation.