Frameworks

 Phonology, phonetics and prosodic

Speech sounds and effects

Graphology

Visual aspects of textual design including form, purpose, and audience

Semantics

word meaning.

Grammar, including morphology

Structural patterns and shapes of English language. Phrase and word level.

Pragmatics

Contextual aspects of language use/meaning.

Discourse

Extended stretches of communication occurring in different genres, modes and contexts. Writing authoritatively about a topic.
Lexis
Word-choice. Meaning at word and phrase level
Register
How language varies in reaction to audience, purpose and context
Mode
How language may vary according of the channel of communication (speech, writing, and mixed modes)
Idiolect
The unique way one person expresses themselves due to their personality, belief systems, social experience etc.
Sociolect
The way of expressing themselves that a social group have in common
Dialect
The variation in word choice and grammatical structure due to where someone lives.