International Land Border Crossing.

[Yorky]

Then why the fork do they call it Visa on arrival. Not very professional is it now?.

There are still many many Thai visitors who call the 30 day visa exemption a "thirty day visa". And articles such as the one above don't help matters.

 

[NongFrank]

Summary of Countries and Territories entitled for Visa Exemption and Visa on Arrival to Thailand .

http://www.mfa.go.th/main/contents/files/services-20150120-100712-551809.pdf

There you can see the different between Visa on Arrival . Nationals of the following countries may enter Thailand without a visa (Tourist Visa Exemption Scheme) & (Bilateral Agreement)