In all of the above ways, you are doing something with the words. It’s usually not enough to just read through a list of words with their definitions or translations and try to remember them. Most students find that they memorise words better if they do something with them. Even better is to try and learn the word in a typical combination with other words. Learning that to apologize means to say sorry is a good start, but it's much better to learn a whole expression containing the word, e.g. He apologized for being late. Not only is this often easier to remember, but you are also learning some very important information on how the word is used.