1. Micro
1.1. Phonetics
1.1.1. Acoustic
1.1.1.1. Vowels
1.1.1.2. Consonants
1.1.1.2.1. Aspiration
1.1.2. Auditory
1.1.3. Articulatory
1.1.4. IPA
1.1.5. Sounds
1.1.5.1. Phonemes
1.1.5.2. Allophones
1.1.6. Features
1.1.6.1. Places of articulation
1.1.6.2. Manner of articulation
1.1.6.3. Nasal sounds
1.1.7. Categorical perception
1.1.8. McGurk effect
1.2. Phonology
1.2.1. Speech perception
1.2.2. Accent
1.2.3. Writing system
1.2.3.1. Abjads/Consonant Alphabets
1.2.3.1.1. Arabic
1.2.3.1.2. Hebrew
1.2.3.2. Alphabet/Phonemic Alphabets
1.2.3.2.1. English
1.2.3.3. Abugidas/Alphasyllabaries
1.2.3.3.1. Devanagari script
1.2.3.4. Semanto-Phonetic
1.2.3.4.1. Chinese
1.3. Morphology
1.3.1. Morpheme
1.3.1.1. Free morpheme
1.3.1.2. Bound morpheme
1.3.1.3. Open-class
1.3.1.4. Closed-class
1.3.1.5. Allomorphs
1.3.2. Word formation
1.3.2.1. Blending
1.3.2.2. Affixation
1.3.2.3. Compounding
1.3.2.4. Acronyms
1.3.2.5. Clipping
1.3.2.6. Folk etymology
1.3.2.7. Novel creation
1.3.2.8. Reanalysis
1.3.2.9. Creative respelling
1.4. Syntax
1.4.1. Constituents
1.4.2. Syntactic categories
1.5. Semantics
1.5.1. Slang
1.5.2. Idioms
1.5.3. Metaphors
1.5.4. Irony
1.5.5. Everyday expressions
1.5.6. Hyperbole
1.5.7. Emojis
1.5.8. Sarcasm
1.5.9. Colloquialisms
1.5.10. Synonyms
1.5.11. Antonyms
1.5.12. Homonyms
1.5.13. Homophones
1.5.14. Polysemy
1.5.15. Analogy
1.5.16. Puns
1.5.17. Taboo language
1.5.18. Euphemisms
1.5.19. Denotation
1.5.20. Connotation
1.5.21. Sense
1.5.22. Reference
1.6. Pragmatics
1.6.1. Implicit
1.6.2. Explicit
2. Macro
2.1. Intra Disciplinary
2.1.1. Applied
2.1.2. Theoretical
2.1.2.1. Ferdinand De Saussure
2.1.2.1.1. Sign
2.1.2.1.2. Langue
2.1.2.1.3. Parole
2.1.2.2. Noam Chomsky
2.1.2.2.1. Plato’s problem
2.1.2.2.2. Universal grammar
2.1.2.2.3. Competence
2.1.2.2.4. Performance
2.1.2.3. Sir William Jones
2.1.2.3.1. Indo-European
2.1.2.4. Sapir Whorf hypothesis
2.1.2.4.1. Linguistic determenism
2.1.2.4.2. Linguistic relativity
2.1.2.5. Language functions
2.1.2.5.1. Personal
2.1.2.5.2. Interpersonal
2.1.2.5.3. Directive
2.1.2.5.4. Referential
2.1.2.5.5. Metalinguistics
2.1.2.5.6. Imaginative
2.1.3. Historical
2.1.3.1. Language change causes
2.1.3.1.1. Language Contact
2.1.3.1.2. Language Variation
2.1.3.1.3. Semantic shift
2.1.3.2. Key Concept
2.1.3.2.1. Proto-language
2.1.3.2.2. Cognate
2.1.3.2.3. Grimm’s Law
2.1.3.3. History of writing
2.1.3.3.1. Sumerian
2.1.3.3.2. Mesoamerican
2.1.3.3.3. Chinese
2.1.3.4. History of English
2.1.3.4.1. Old (450-1100 AD)
2.1.3.4.2. Middle (1100-1500)
2.1.3.4.3. Modern (1500-present)
2.1.4. Descriptive
2.1.4.1. Language Classification
2.1.4.1.1. Genetic
2.1.4.1.2. Typological
2.1.4.2. Structure
2.1.4.2.1. Elements’ relationships
2.1.4.3. Linguistic ambiguity
2.1.4.4. Productivity
2.1.4.5. Arbitrariness
2.1.5. Comparative
2.2. Inter Disciplinary
2.2.1. Sociolinguistics
2.2.1.1. Language variation
2.2.1.1.1. Dialect
2.2.1.1.2. Register
2.2.1.1.3. Lects
2.2.1.1.4. Pidgin
2.2.1.1.5. Standartization
2.2.1.1.6. Diachronic language variation
2.2.1.1.7. Synchronic language variation
2.2.1.2. S-curve model
2.2.2. Psycholinguistics
2.2.2.1. Language acquisition
2.2.2.1.1. First-language acquisition
2.2.2.1.2. Bilingual language acquisition
2.2.2.1.3. Second-language acquisition
2.2.3. Neurolinguistics
2.2.3.1. Human brain
2.2.3.1.1. Cerebrum
2.2.3.1.2. Cortical syndromes
2.2.4. Stylistics
2.2.5. Computational
2.2.5.1. Natural Language Processing (NLP)
2.2.5.2. Speech Processing
2.2.5.3. Machine Translation
2.2.5.4. Language Modeling
2.2.6. Corpus
2.2.6.1. Empirical basis
2.2.6.2. Large-Scale Analysis
2.2.6.3. Quantitative methods
2.2.6.4. Corpora
2.2.6.4.1. General
2.2.6.4.2. Specialized
2.2.6.4.3. Learner
2.2.6.4.4. Historical
2.2.6.4.5. Parallel
2.2.6.4.6. Multimodal
2.2.7. Cognitive