In linguistics, you will learn things about languages, phonetics, syntax, and many other things.

The word "lexicon" is a noun. Here is an example of its usage in a sentence:

The lexicon of Latin is extremely complicated.

In linguistics, the head of a sentence is called the main verb or the predicate. It is the central element that carries the main meaning of the sentence and often determines the tense, mood, and aspect of the sentence. The head of a sentence can also be a noun or an adjective in certain sentence structures.

In linguistics, a pragma is an utterance that relies on implicit information and context to be interpreted correctly. It refers to the underlying meaning or intention behind a speaker's words, beyond the literal content of the sentence.

The word doublet carries meaning in many fields, such as clothing, gemstones, linguistics, and physics.