Some quantifiers can be used with singular count nouns.
one person | each manager | every employee |  |
Some quantifiers can only be used with plural count nouns.
two problems | several young people | a few managers | A couple of employees A number of companies A majority of professionals | both teachers
Some quantifiers can be used with non-count nouns.
A little productivity | much choice | A great deal of interest | Not as much satisfaction | a large amount of money
Some quantifiers can be used with both count and non-count nouns.
Count nouns/Countable nouns | Non-count nouns/Uncountable nouns
no people some/any employees a lot of companies a third of the companies plenty of businessmen all teenagers most students more cities | no choice some/any conformity a lot of individuality a third of the money plenty of satisfaction all the time most dissatisfaction more interest