For one, both are travel documents essential in entering a country where the entrant is not a citizen of. It can be easy for a person to confuse the passport with a visa. These documents will help confirm and verify your identity and nationality, as well as validate your stay in the host countries. Of all the paperwork that you absolutely must have while traveling in other countries, none are as important as the passport and all the accompanying visas for all the countries that you are traveling to. Traveling to other countries can become quite bothersome if you don’t have the necessary documents with you, which emphasizes the importance of having the correct ID photo on all your travel documentation.