A study visa is a type of visa that allows international students to enter a country for the purpose of studying at an educational institution. It usually grants permission to stay for the duration of the course or program, and may have specific conditions, such as enrollment in a recognized school, maintaining a certain course load, and restrictions on work hours.

Each country has its own requirements and application processes for study visas, including documentation like proof of acceptance from an educational institution, financial support evidence, and sometimes language proficiency tests. It’s essential to check the specific regulations for the country where you plan to study.

A work visa is a type of visa that allows individuals to legally work in a foreign country. It typically requires sponsorship from an employer and is issued for specific job roles or types of employment. The details can vary significantly by country, but here are some common aspects:

1. Types of Work Visas: There are often different categories based on skill level, job type, or duration of stay, such as temporary work visas, skilled worker visas, and more.

2. Requirements: Applicants usually need to provide proof of a job offer, qualifications, work experience, and sometimes pass a health or background check.

3. Application Process: The process can include submitting an application to the relevant government agency, paying fees, and sometimes attending an interview.

4. Duration: Work visas can be temporary, leading to extensions, or pathways to permanent residency, depending on the country and specific visa type.

5. Rights and Restrictions: Work visas often come with certain conditions, such as restrictions on changing employers or working outside the approved job role.

A tourist visa is a type of visa that allows individuals to travel to a foreign country for leisure or tourism purposes. Here are some key points about tourist visas:

1. Purpose: The primary purpose is to visit for sightseeing, relaxation, or recreational activities, rather than for work or study.

2. Duration: Tourist visas are usually issued for a limited duration, often ranging from a few weeks to several months, depending on the country’s regulations.

3. Application Process: To obtain a tourist visa, applicants typically need to submit a visa application, provide supporting documents (like travel itineraries, proof of accommodation, and financial statements), and sometimes attend an interview.

4. Visa Types: Some countries offer different categories of tourist visas, such as single-entry, multiple-entry, or e-visas.

5. Conditions: Tourist visas often have restrictions, such as prohibiting any form of employment during the stay and requiring travelers to leave the country before the visa expires.

6. Varies by Country: Requirements, processing times, and fees for tourist visas can vary significantly from one country to another, so it's essential to check the specific regulations of the destination country.