Phonetics, phonology, morphology, syntax...

Linguistics
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#Phonetics:
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the study and classification of speech sounds.OR Phonetics is the branch of linguistics that deals with the sounds of speech and their production, combination, description, and representation by written symbols.
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2.#Morphology
in linguistics, morphology is the study of words, how they are formed, and their relationship to other words in the same language. It analyzes the structure of words and parts of words, such as stems, root words, prefixes, and suffixes.
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3.#Syntax :
In linguistics, syntax is the set of rules, principles, and processes that govern the structure of sentences in a given language, specifically word order. The term syntax is also used to refer to the study of such principles and processes.
OR
Syntax is basically the structure of sentences. Sentences have to follow certain structural rules in order to make sense. You can't just throw any words together to make a sentence! Order words make sense need to… this doesn't make sense!
#Semantics
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Semantics is the philosophical and scientific study of meaning—in language, programming languages, formal logics, and semiotics. It focuses on the relationship between signifiers—like words, phrases, signs, and symbols—and what they stand for, their denotation.
or
Semantics is the study of the meaning of linguistic expressions.
Example of semantics.......
Semantics is the study of meaning in language. It can be applied to entire texts or to single words. For example, "destination" and "last stop" technically mean the same thing, but students of semantics analyze their subtle shades of meaning.
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#Pragmatics
Simple Definition of pragmatics
linguistics : the study of what words mean in particular situations
Pragmatics focuses on conversational implicature, which is a process in which the speaker implies and a listener infers. Simply put, pragmatics studies language that is not directly spoken. Instead, the speaker hints at or suggests a meaning, and the listener assumes the correct intention.
OR
Pragmatics is the study of the aspects of meaning and language use that are dependent on the speaker, the addressee and other features of the context of utterance, such as the following:
The effect that the following have on the speaker’s choice of expression and the addressee’s interpretation of an utterance:
Context of utterance
Generally observed principles of communication
The goals of the speaker..
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#Lexicology
study of the form, meaning, and behavior of words.
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#Stylistic
Stylistics is the study of linguistic style, whereas (theoretical) Linguistics is the study of linguistic form. The term 'style' is used in linguistics to describe the choices which language makes available to a user, above and beyond the choices necessary for the simple expression of a meaning