gTLD: Generic Top Level Domain

Domains which are used by public and not specific for special geographical zone, called public domain For instance .com which is abbreviation of word commercial, can easily be registered everywhere in the world.

Domain	Description
.com	Is abbreviation of the word commercial and the most well-known and used suffix which is used for websites domain name. Most of the multipurpose websites use this suffix for their domain name.
.net	Is abbreviation of the word network and mostly used by Internet services provider companies or informing networks.
.org	Is abbreviation of the word organization and can be used by private organizations with either commercial or non-commercials activities.
.edu	Is abbreviation of the word education and can be used by establishments with educating activities such as educational bases.
.gov	Is abbreviation of the word government and used by governmental institutions.
.biz	Is abbreviation of the word business which is created for career – business web sites specially the one with e-commercial activities.
.int	Is abbreviation of the word international which illustrates international companies' Internet zone.
.info	Is abbreviation of the word information, created for websites which are somehow related to different fields of informing such as science, product's introduction ,service providing and etc.
.web	Is suffix for websites which discuss about web topics.
.name	Is the first individual suffix which been created for private usages, it can be used by every website creator with any purpose.
.ac	Is Ascension Islands national domain suffix and normally used in survives provider centers, the organization employ new employees without any dependence.
.ws	Is Western Samoa national domain suffix, attractiveness of this name is because of its similarity to the abbreviation of the name "website", therefore websites containing any type of information can have this domain suffix.
.us	Although this suffix is The united states national domain suffix, but because of its' similarity to abbreviation of the word "us" used so often for different domain name.
.tv	Although this suffix if Tuvalu national domain suffix, but because of its' similarity to abbreviation of the word television is noteworthy to televisions and satellites networks it often used for that aim as well.
.museum	This suffix is used for museum websites.
.aero	This suffix is used for website related to aviation transport.
.mil	This is special for military websites.
.cat	This created to be used by Catalan cultural, pedagogical and linguistics organizations.
.coop	Is considered for Cooperation organizations websites.
.jobs	Websites with this suffix are resource of human information for employers who are going to employ, employees.
.mobi	Application of this suffix is in Internet bases which provides mobile phone services and sale.
.pro	This suffix is for websites in which professional people activities are being investigated such as physics Scientifics or accountants ,lawyers and etc.
.travel	This suffix is special for travel services provider companies and organizations.