This is the 14797th most frequent Russian word.
плиткой
"Плиткой" means "tile" or "tiled" in instrumental case in Russian.
The word "плиткой" is used as an instrumental case noun indicating the material used in decoration, showing the type of material.
Я украсил стену ванной плиткой.
I decorated the bathroom wall with tiles.
In this sentence, "плиткой" refers to the material used to lay the walkway, functioning as an instrumental noun.
Перед домом выложили дорожку плиткой.
A walkway was laid with tiles in front of the house.
Here, "плиткой" describes the material being applied as flooring, again in the instrumental case describing the method or item used in the action.