-Lexis means the vocabulary of a language; the total stock of words.
-When you're analysing spoken and written language you'll notice words that share a similar topic or focus. For example, in an advert for mobile phones you'd find words such as SMS, text-messaging and battery life. Words that are linked together in this way are known as a lexical field.
-Semantics is the study of how meaning is created through words and phrases. Sometimes this meaning is explicit, but sometimes it's implicit. A word will have a literal meaning but it can also be associated with other meanings.
-For example, the word red refers to a colour, but it can also be associated with danger.
-Grammar is the system of rules that…