In terminology, die, in colloquial speak, is the verb form of death; in physico-chemically neutral terminology, it is a defunct term (see: life terminology upgrades) correctly meaning the point in time or spacetime when a thing, typically a CHNOPS+ thing, “ceases to exist” (see: cease to exist); the reaction end of a person.

Difficulties
See main: Death does not exist; life terminology reform
One cannot say, to note, that a hydrogen atom, e.g., or a water molecule “dies” at any point of its formation, synthesis, state of existence, or analysis. Scaling this logic up the chain of being, or “molecular evolution table”, the same logic holds for the human, Hu, human molecule, human chemical, or human species.

Quotes
The following are related quotes:

“There is neither birth nor death for any mortal, but only a combination and separation of that which was combined, and this is what amongst laymen they call ‘birth’ and ‘death’. Only infants or short-sighted persons imagine any thing is ‘born’ which did not exist before, or that any thing can ‘die’ or parish totally.”
Empedocles (c.450BC), Fragment I21 / DK8 + Fragment I23 / DK11; cited by Baron d’Holbach in The System of Nature (pg. 27); cited by cited by Alfred Lotka (1925) in Elements of Physical Biology (pg. 185, 246)

“When you die, you turn into an ‘angel with very pretty wings, and god is a boy with a nice white shirt.”
— Girl #5 (2016), “Video of Kids aged 4 and 5 who were asked: What Happens When You Die? For Dying Matters Awareness Week” (1:21-1:40), Keech Hospice Care, Luton, England [1]

“If we’re alive we die, [if] we’re not [we don’t].”
Patrick Fergus (2015), an Atheism Reviews video; in: Best of Pat Fergus (28:28); made shortly before he met his own reaction end

See also
What happens when you die?

References
1. Thims, Libb. (2016). Smart Atheism: For Kids (pdf | 309-pgs) (angels, pgs. 99, 113, 191, 273, 284, 287; Girl #5, pg. 5; Obama, pgs. 87). Publisher.

External links
Die – Wikipedia.

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