Keywords and domain names.

Hello world, lookin to launch my first niche site, and I have a question about using a keyword in your domain name. Does your keyword have the same search value as when you add an "S" to the end of it? For example, is sportworld.com holding the same search value as sportsworld.com? In theory, when you look up "sport" in keyword analysis it will say - searches, however when you type "sports" it has 1 million searches.

"Sports" can cover both "sport" and "sports". Not vice versa.

s or any other addition make difference in g00gle , your keyword should be EMD .

An addition or exclusion of single letter does effect SEO results. For EMD benefit, it has to be exact match or it would be considered as just another domain.