十四日: fourteenth day of the month

二十四日: twenty-fourth day of the month

inside, within (physical location) / between, among / while, during, inside or within a span of time / (when used possessively) one's own, my, our

letter, character / handwriting, penmanship

sooner or later / eventually / before long

twenty-fourth day of the month

fourteenth day of the month

please give me / (expressing a request) please do something for me

Please do (action)

Please do not (do)