when do you use much and when do you use many?

Question

Answer

Yes, it's exactly how MARCUS wrote.  A little more explanation : 

Countable / Uncountable Nouns
In connection with much / many people often speak of countable nouns and uncountable nouns.
Countable nouns have a singular and a plural form. In plural, these nouns can be used with a number (that's why they are called 'countable nouns'). Countable nouns take many.

Example: 100 friends – many friends 

Uncountable nouns can only be used in singular. These nouns cannot be used with a number (that's why they are called 'uncountable nouns'). Uncountable nouns take much.

Example: ( we can't say 100 money)  we say  – much money 

Note: Of course you can count money – but then you would name the currency and say that you have got 5 euro (but not „5 money“).

Answer

i remember it like that: much is for everything you can't count (e.g. water)
many for everything you can count (e.g. people)

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