How to say "abundance" in Japanese

• 存在量そんざいりょう
  nounAbundance as a measurable amount — how much of something exists. A less common, quantitative noun, at home in scientific or statistical writing; it treats abundance as a figure, not a vague sense of plenty.
• 充溢じゅういつ
  noun, suru verb, intransitive verbAbundance as brimming, overflowing fullness — its 'overflow; exuberance' sense. Suits vitality, emotion, or confidence that wells up and spills over; a less common word, seldom the choice for plain 'plenty of' statements.
• 氾濫はんらんJLPT N1approx.Common
  noun, suru verb, intransitive verbAn oversupply or plethora — 'abundance' especially of something undesirable, pictured as floodwater spreading beyond control. Think of rumors or shoddy goods pouring out everywhere.

Use 存在量 for abundance as a measurable quantity, 充溢 for brimming, overflowing fullness of feeling or vitality, and the common 氾濫 for an oversupply or plethora of something undesirable; the first two are less common.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 存在量そんざいりょうabundance
• 充溢じゅういつoverflow
• 氾濫はんらんoversupply