Hi Yuan, Both 'false' and 'fake' can be used. The focus is slightly different: false = information that is not true fake = a thing is not genuine/real If you're saying a 'false' passport, the focus is on the information not being true. If you're saying a 'fake' passport, the focus is on the physical object not being real/genuine. I hope this helps! -Josh

Differences: 1. False: Incorrect or intended to deceive. 2. Fake: Not genuine; counterfeit. Context: * False passport: Emphasizes illegitimacy. * Fake passport: Emphasizes it’s a counterfeit. Your Example: "She was charged with using a false passport." * "False": More formal and typical in legal contexts. * "Fake": Less formal but still correct. Conclusion: * Preferred: "She was charged with using a false passport." * Also correct: "She was charged with using a fake passport."

Also, "false" is neutral and factual in tone, while "fake" is slightly informal or colloquial.

false - formal fake - less formal

They are not the same. For example, if your passport says that you were born in the wrong city it would be false but not fake.