This is not accurate to learn languages. You can not show translation on right click menu <- I don't understand why to not translate, and another reason for 2 stars is saved words does not appear on saved words list. Sorry but not sorry.

estaría genial si se pudiera para español y me ahorraría tiempo para traducir los significados

Very good

Easy to use and install, this simple extension lets me save favorite words and gives me a daily drop of three new words to learn. I like the simplicity and clarity.