When do you use much and more in English grammar?

Answer 1

"More" is the comparative form of "much", although "more" can also be used for other purposes, such as forming the comparative of adjectives pronounced with more than two syllables, and both can be used as adverbs. Both can be used as nouns, but if so used, they are almost always followed immediately by a prepositional phrase beginning with "of". When used as an adjective, "much" should modify a noun that is either formally singular or is idiomatically regarded as singular, even if plural in form. If a modified noun is plural, its adjective should be "many" instead of "much". The antonym of "many" should be "fewer", not "less", which is the antonym of "more".

Answer 2

"Much" is used with uncountable nouns to indicate a large quantity or degree. For example, "There isn't much water left." "More" is used with both countable and uncountable nouns to indicate a greater amount or degree compared to a previous amount. For example, "I need more milk" or "She's more talented than her sister."