all-or-nothing vs all-or-none

all-or-nothing and all-or-none both are adjectives.

Word	Noun	Adjective	Verb	Adverb
all-or-nothing	No	Yes	No	No
all-or-none	No	Yes	No	No

As adjectives, all-or-nothing and all-or-none are synonyms defined as:

all-or-nothing and all-or-none: occurring completely or not occurring at all

all-or-nothing (adjective)	all-or-none (adjective)
occurring completely or not occurring at all	occurring completely or not occurring at all