Vocabulary

Part of a series on
Reading
Learning to read Reading readiness Vocabulary development Vocabulary learning
Scientific theories and models Dual route theory Simple view of reading Science of reading Scarborough's Reading Rope The active view of reading model
Cognitive processes Comprehension Phonemic awareness Phonological awareness Subvocalization Word recognition
Reading instruction Analytic phonics Basal reader Concept-oriented Directed listening and thinking activity Guided reading Independent reading Literature circle Phonics Reciprocal teaching Structured word inquiry Sustained silent reading Synthetic phonics Whole language
Reading rate Fluency Slow reading Speed reading Words per minute
Readability Automatic assessment Legibility Readability test
Reading differences and disabilities Dyslexia Hyperlexia Reading disability Reading for special needs
Language Alphabetic principle Braille Dolch word list Grapheme History of printing Language Morpheme Orthography Phoneme Sight word Vocabulary Written language Writing Writing system
Literacy Critical literacy Close reading Distant reading Family literacy Functional illiteracy Great books Literary criticism Literature Children's
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A vocabulary (also known as a lexicon) is a set of words, typically the set in a language or the set known to an individual. The word vocabulary originated from the Latin vocabulum, meaning "a word, name". It forms an essential component of language and communication, helping convey thoughts, ideas, emotions, and information. Vocabulary can be oral, written, or signed and can be categorized into two main types: active vocabulary (words one uses regularly) and passive vocabulary (words one recognizes but does not use often). An individual's vocabulary continually evolves through various methods, including direct instruction, independent reading, and natural language exposure, but it can also shrink due to forgetting, trauma, or disease. Furthermore, vocabulary is a significant focus of study across various disciplines, like linguistics, education, psychology, and artificial intelligence. Vocabulary is not limited to single words; it also encompasses multi-word units known as collocations, idioms, and other types of phraseology. Acquiring an adequate vocabulary is one of the largest challenges in learning a second language.