This is the 10th most frequent Russian word.
этом
"Этом" means "this" (prepositional case).
Indicates a specific location that is being referred to within the context of the conversation.
В этом месте мы были вчера.
We were in this place yesterday.
Refers to a specific topic or subject of discussion previously mentioned.
Давайте поговорим об этом позже.
Let's talk about this later.
Used to specify a person being discussed or referred to in the earlier context.