This is the 108th most frequent Russian word.
мира
The Russian word "мира" means "peace" or "world" in the genitive or accusative case, depending on context.
The word 'мира' is in the genitive case and represents 'peace' (as in a state of harmony).
Я хочу достичь мира во всем мире.
I want to achieve peace in the entire world.
The word 'мира' is in the genitive case and refers to 'world' (as in the planet or global context).
Улицы этого города полны людей со всего мира.
The streets of this city are full of people from all over the world.
The word 'мира' is also in the genitive case describing 'world' (as a geographical entity).