This make it difficult for you to remember

Learning vocabulary is sometimes easy, but sometimes it is very difficult. I say it is easy because it’s shorter than an article, but has a lot of vocabulary, and has a lot of words that look similar or one word has a lot of different meaning or some of the words read the same. So here is a question; if you try to remember a lot of words that have similar spelling, what can you do? Sometimes I have the same problem. I do not know these words, or they have the same meaning but are used in a different way, which makes me feel confused. This makes some words harder than others.