Yes, the Czech Republic is mountainous, especially along the borders with Germany and Poland (Ore Mountains).
There are hills and mountains in the south of Poland
Poland has some mountains, but mainly grasslands.
Poland is mostly flat but it has some mountains
These are the Carpathians Mountains.
Carpathian Mountains
Tatra Mountains
maybe
These mountains are the Carpathians Mountains.
carpathian mountains
The Tatra Mountains separate Poland and Slovakia.
On the border of Poland and the Czech Republic