積み重ね (つみかさね) — accumulation, piling up, stacking

積つみ重かさね accumulation

Frequency #7241 Frequency rank among common Japanese words. Lower number = more common. Grade 4 Japanese school grade level in which this kanji is taught. Grade 1 is first year of elementary school. 4 characters 和語 wago 和語 (wago) — Native Japanese compound: all kanji use kun'yomi (native Japanese) readings. noun Part of speech (JMdict: n)

tsumikasane

Pitch高低アクセント — Tokyo-dialect pitch accent. The number is the drop position: 0 = heiban (no drop), 1 = atamadaka (drops after 1st mora), N = drops after Nth mora. The line above each mora marks high pitch; below, low. つみかさね[0] heiban 平板

Synth audio is approximate — the diagram is the canonical reference.