None has 10 different meanings across 5 categories:
a canonical hour that is the ninth hour of the day counting from sunrise
"The monk rang the bell for none, marking the ninth hour since sunrise to begin his evening prayers."
a service in the Roman Catholic Church formerly read or chanted at 3 PM (the ninth hour counting from sunrise) but now somewhat earlier
"The parishioners were confused when the priest announced that today's none would be celebrated an hour later than usual due to the summer solstice."
A person without religious affiliation.
"The ancient manuscript records that the monk began his prayers at none, observing the traditional Christian service for the ninth hour after dawn."
Alternative form of nones: the ninth hour after dawn; (Christian) the religious service appointed to this hour.
In plain English: None means nothing at all when used as a noun to refer to a quantity.
"None of the cookies were left after the party."
Usage: Use "none" as a pronoun or determiner to mean "not any" when referring to zero items or people, such as in "None of the apples were eaten." Do not use it as a noun to refer to the ninth hour after dawn or a specific religious service.
not at all or in no way
"seemed none too pleased with his dinner"
"shirt looked none the worse for having been slept in"
"none too prosperous"
"the passage is none too clear"
To no extent, in no way.
"None of his excuses convinced me that he wasn't responsible for the mess."
In plain English: None means not at all or zero times when used to describe how often something happens.
"None of them really care about the rules."
Usage: Use "none" as an adverb only when it functions as an intensifier before another negative word, such as in the phrase "none too soon." In standard English, do not use it alone to mean "not at all," as this is considered incorrect usage.
Not any of a given number or group.
"After checking every box on our inventory list, we found that none of the items were missing."
No one, nobody.
"After checking every locker in the gym, none of them could find their own key."
Not any; no (usually used only before a vowel or h)
"None of the other players could hear him when he whispered his secret during the game."
None comes from Old English, where it originally meant "not one." The word is formed by combining "ne," meaning "not," with "one.