This is the 6162nd most frequent Russian word.
таблицы
"Tables" (plural form) – structured data or information arranged in rows and columns.
Here, 'таблицы' is in the singular genitive case, referring to the structure of the table.
Мы изучаем сложную структуру таблицы.
We are studying the complex structure of the table.
In this case, 'таблиц' is the plural genitive case, used here because of the word 'несколько' (several).
В нашей комнате есть несколько таблиц.
There are several tables in our room.
Here, 'таблицы' is in the plural accusative or nominative case, referring to the concept of 'tables' as tools for organizing data.