@charmenglishcl: What makes a word advanced? What makes a word beginner-level? In this video, I share two key factors that determine when a word should be taught, and whether using it on a test like IELTS would be considered advanced. Of course, there is a lot more complexity to this topic such as varied uses of the same word and different student needs but this can give you a place to start. Charts are taken from the book How Vocabulary is Learned by Stuart Webb and Paul Nation, and I highly recommend this book!