active; energetic; vigorous; positive (outlook); proactive

to save; to put aside; savings

to accumulate; accumulation; cumulative; cumulatively

snow; snow cover; snow mantle

toy building blocks

area (of a floor, piece of land etc); surface area; tract of land

to accumulate

volume (amount of space an object occupies)

to pile up; to heap; accumulation

large area; (fig.) (of a problem) (occurring) on a massive scale