1. The document discusses countable and uncountable nouns. Countable nouns can be counted in units (e.g. one apple, two apples) while uncountable nouns cannot be counted in units (e.g. butter, coffee, meat). 2. Both countable and uncountable nouns can be measured using measuring units like cups, spoons, bottles which express an exact amount, or quantifiers like some, many, a lot which express an inexact amount. 3. The difference between how many and how much is that how many is used to ask about plural countable nouns while how much is used to ask about uncountable nouns. Examples