A top-level domain (TLD) is the last segment of a domain name or the part that follows immediately after the “dot” symbol in web address. “WATCHES” is not a popular or known TLD, assuming that you refer “WATCHES” as a top-level domain as per the Internet’s domain name system. Notable TLDs include .com, .edu, .org, .gov, and country codes such as .uk, .au, .us, etc.
However, the Internet Corporation for Assigned Names and Numbers (ICANN), which is the organization responsible for the management and coordination of the internet Protocol (IP) addresses and the domain name system, allows the creation of generic top-level domains (gTLDs). Generic TLDs do not have to utilize formal country codes or represent organizational types. This way, a wide variety of gTLDs have been launched and made available to the public in recent years, including anything from .club to .pizza to .xyz (ICANN).
For example, according to ICANN’s New gTLD Current Application Status, as of February 2020, over 1200 new gTLDs have been delegated, and over 300 more are in process (ICANN). Therefore, in theory, “WATCHES” could potentially become a new gTLD, if it hasn’t been applied for and approved by ICANN.
If “WATCHES” were to become a TLD, businesses related to watches could then use this for their websites. For instance, a business named “Elegant Timepieces” could have a domain name like “elegant.timepieces.watches” instead of “eleganttimepieces.com”. This could be a marketing strategy and a way to directly express the content of the website to internet users.
There’s also an exception to keep in mind for “.watch”, a TLD launched in 2014 by Donuts Inc., one of the largest operators of new gTLDs (IANA). While “.watch” is related aesthetically to “WATCHES”, they are not the same TLD.
Internet users must be aware that the number of TLDs has greatly expanded beyond the original gTLDs and country code TLDs (ccTLDs). While .com, .org, and country-specific TLDs are still the most common, companies and organizations now have the freedom to apply for virtually any TLD they wish
Sources used: ICANN (Internet Corporation for Assigned Names and Numbers), IANA (Internet Assigned Numbers Authority) website.