Read the dictionary definition of much. All definitions for this word.
1. a great amount or extent
1. they did much for humanity
2. (quantifier used with mass nouns) great in quantity or degree or extent
1. not much rain
2. much affection
3. much grain is in storage
3. (degree adverb used before a noun phrase) for all practical purposes but not completely
1. much the same thing happened every time
2. practically everything in Hinduism is the manifestation of a god
4. very
1. he was much annoyed
5. to a great degree or extent
1. she's much better now
6. to a very great degree or extent
1. I feel a lot better
2. we enjoyed ourselves very much
3. she was very much interested
4. this would help a great deal
7. frequently or in great quantities
1. I don't drink much
2. I don't travel much