This is the 13963rd most frequent Russian word.
обустройством
"Arrangement" or "equipping" related to organizing or setting up something.
The word 'обустройством' refers to the overall process of arranging, setting up, or organizing a space (in this case, her new home).
Мария занимается обустройством своего нового дома.
Maria is working on setting up her new house.
Here, 'обустройством' is used to refer specifically to the process of landscaping or arranging the yard area.
Обустройством двора занимаются профессиональные дизайнеры.
Professional designers are responsible for the landscaping of the yard.
In this example, 'обустройством' refers to the organizing or setting up of the interior office environment.