This is the 253rd most frequent Czech word.
druhém
"Druhém" is the locative or instrumental form of "druhý," meaning "second" in English.
Here, "druhém" is used to indicate the ordinal number (second) in the locative case, indicating position.
Na druhém místě skončil Pavel.
Pavel finished in the second place.
In this context, "druhém" describes an ordinal number and is in the locative case after the preposition "o".
Mluvili jsme o druhém problému.
We talked about the second problem.
"Druhém" here signifies ordinal reference and conforms to the locative grammatical case, denoting position in relation to the table.