積み重ね

1. Origins, structure, and basic meaning

• Structure: 積み重ね is read as つみかさね and is a noun for the accumulation of repeated efforts or for a physical pile of stacked objects.
• Basic usage: Accumulated effort leading to results appears in 努力の積み重ねが成果につながる, while a pile of stones collapsing appears in 石の積み重ねが崩れる.

2. Common pitfalls and similar expressions

• Abstract accumulation and physical pile
  • It can denote both cumulative effort and a structure made by stacking stones.
• Difference from 積み重なる
  • Unlike the verb describing things accumulating, this word names the accumulated process or result.