(a)more, more than(comparative of `much' used with mass nouns) a quantifier meaning greater in size or amount or extent or degree; above; more than“more land”, “more support”, “more rain fell”, “more than a gallon”
(a)more(comparative of `many' used with count nouns) quantifier meaning greater in number“a hall with more seats”, “we have no more bananas”, “more than one”
(r)more, to a greater extentused to form the comparative of some adjectives and adverbs, indicates that the adjective or adverb is more of something“more interesting”, “more beautiful”, “more quickly”