black soil
涅 centers on dark, fertile soil, specifically black soil. The meaning is narrow and concrete, referring to a type of earth rich in organic matter.
涅 combines 氵 (water) with 圼, which likely contributes the sound and the idea of dark earth. The character is associated with black soil or mud.
Water 氵 mixes with earth 土 under the sun 日 to form rich, dark black soil.
For ネツ, imagine a net catching clumps of black soil: net -> ネツ, and the net fills with dark earth.
nirvana; supreme enlightenment
the death of Shakyamuni Buddha
Buddhist service held on the day of Buddha's death (orig. 15th of the 2nd month, now 15th of the 3rd month)
parinirvana; perfect nirvana
Mahayana Mahaparinirvana Sutra; Nirvana Sutra
Buddhist service held on the day of Buddha's death (orig. 15th of the 2nd month, now 15th of the 3rd month)
image of the Buddha entering nirvana
Nirvana principle
enlightenment leads to serenity
Mahayana Mahaparinirvana Sutra; Nirvana Sutra
wind blowing on the day of the Buddhist service held on the day of Buddha's death (15th day of the 2nd month)
last snows; snow remaining after the anniversary of Buddha's death
black; color of sediment in a still pond
parinirvana; perfect nirvana