Classify the following words as either nouns or verbs: Work, Run, Book.
- Work: can be both a noun and a verb
- Run: can be both a noun and a verb
- Book: can be both a noun and a verb
Complete the following task based on the instruction and optional input provided.### Instruction:
Classify the following words as either nouns or verbs: Work, Run, Book.

### Output:
- Work: can be both a noun and a verb
- Run: can be both a noun and a verb
- Book: can be both a noun and a verb