This is the 9109th most frequent Russian word.
саммита
"Саммита" is the genitive form of "саммит," which means "summit" (a high-level meeting between leaders).
The word 'саммита' ('summit') refers to a high-level meeting between leaders to discuss important topics.
После саммита лидеры стран договорились о новом соглашении.
After the summit, the country leaders reached a new agreement.
The word 'саммите' ('summit') in the prepositional case indicates the specific event discussed.
Дискуссии на саммите касались международной безопасности.
The discussions at the summit were about international security.
Here, 'саммита' in the genitive case reflects the possessive relationship indicating participants belonging to the summit.