 Hello! Semantics, and I am sure you know that, is concerned with the study of meaning. This unit discusses the approaches to the study of meaning, concentrating on word meaning, including a discussion of the most important theories of word meaning. Furthermore, some selected problems of defining word meaning, such as ambiguity and vagueness are presented. In the content units, which contain several e-lectures and microteaching videos, we will look at word meaning, draw a distinction between sense and reference, including theories of word meaning, and will end up with some selected problems such as ambiguity and vagueness. If you don't know where to start, use the hyperlinked question set in the How to Proceed section as guidance. And once an activity is ready, you can document your learning progress by ticking it off. The mastery test is another choice task, not problematic at all after content mastery. And the suggestions for in-class activities are all about meaning, the meaning of words and sentences, thus another practical, full of data ready for analysis.