Because, Because of, Due to

The words "because," "because of," and "due to" are all used to explain the reason or cause of something. However, there are slight differences in their usage:

1. "Because" is a conjunction that introduces a cause-and-effect relationship between two clauses. It is used to provide a reason or explanation for an action or event. Example: "She couldn't attend the meeting because she was feeling unwell."

2. "Because of" is a prepositional phrase that is used before a noun or a noun phrase to indicate the reason for something. It is commonly followed by a noun or a gerund. Example: "The flight was delayed because of bad weather."

3. "Due to" is also a prepositional phrase and is used before a noun or a noun phrase to indicate the cause or reason for something. It is more formal than "because of" and is typically used in more formal or written contexts. Example: "The cancellation of the event was due to unforeseen circumstances."

In summary, "because" is a conjunction used to introduce a cause-and-effect relationship between clauses, while "because of" and "due to" are prepositional phrases used to indicate the reason for something, with "due to" being more formal.