Surfing = when you're on the internet, going from site to site is called surfing.
Web browser = This is the program you need to access the internet.
Website = a collection of related web pages with data, such as text,
Images or videos, which are stored or 'hosted' (= literally: 'housed, sheltered') in the jargon used. The website is then placed on one or more web servers and (usually) made accessible via the internet. The word part web in website refers to the worldwide web and the English site means place.