This is the 11005th most frequent Russian word.
гарнир
Side dish.
Here, 'гарнир' is used to mean a side dish accompanying the main course.
На обед я приготовил гарнир из картофельного пюре.
For lunch, I prepared a side dish of mashed potatoes.
In this usage, 'гарнир' refers to a decorative accompaniment to the main culinary presentation.
Шеф повар украсил блюдо гарниром из зелени.
The chef garnished the dish with greens.
This sentence uses 'гарнир' to indicate a complementary component to enhance the main dish.