Quantifiers are words that give us information about the number of something: how much or how many.
All, every and each mean the whole number of something in a group.
Both, neither and either are used to talk about two people or things.
https://learnenglish.britishcouncil.org/en/english-grammar/determiners-and-quantifiers/quantifiers http://dictionary.cambridge.org/grammar/british-grammar/quantifiers/
http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-3/session-2/activity-3