pile-up

A pile, a group of people or things which have piled up on one another, especially

Traffic was backed up for miles due to a twelve-car pile-up on the freeway earlier today.

Pinot was among those involved in the huge pile-up just as the race entered the final three kilometres. Grazes were visible under his torn clothing as he pedalled, with a face like thunder, to the finish line.

A pile, a group of people or things which have piled up on one another, especially

An accumulation that occurs over time, especially one which is not welcome.

If the supervisor deals with daily workload in an orderly way and does not put pressure on the employee about a pile-up of work, then the employee's perception of pressure will be reduced and the employee will not suffer from work pressure stress.

Evidently, the annealing in NO ambient results in a pile-up of nitrogen at the oxide/SiC interface and this results in a reduction of interface states near the conduction band edge of 4H-SiC [16,30,31].