Latin has several noun declensions and they are not regular; Esperanto has two cases and they are totally regular; Latin has 3 grammatical genders; Esperanto has none. The verb system of Latin is full of irregularities; Esperanto has all the tenses any human could possibly apply during an intelligent conversation and they all follow the rules. read more
Note: This section explains why Esperanto is not the best candidate for a “universal” language, but it probably should not influence your decision whether to learn it or not, unless introducing a truly international lingua franca is your main goal. read more