This is the 12211th most frequent Russian word.
инспекцию
"Inspection."
The word 'инспекцию' is used here in the accusative case as the object of the verb 'посетили', denoting the place visited.
Мы посетили инспекцию, чтобы обсудить важные вопросы.
We visited the inspectorate to discuss important matters.
Here, 'Инспекция' is the subject of the sentence in the nominative case, representing the organization performing the action of inspection.
Инспекция проведёт проверку на следующей неделе.
The inspectorate will conduct an inspection next week.
In this context, 'инспекции' is in the genitive case, indicating possession or purpose, referring to an inspection that was done.