Lexical density is a concept in computational linguistics that measures the structure and complexity of human communication in a language.
[2][3] The lexical density for an individual evolves with age, education, communication style, circumstances, unusual injuries or medical condition,[4] and his or her creativity.
A grammatical item typically is the functional glue and thread that weaves the content and includes pronouns, conjunctions, prepositions, determiners, and certain classes of finite verbs and adverbs.
[2] Human discussions and conversations involving or anticipating feedback tend to be sparser and have lower lexical density.
In contrast, state Stubbs and Biber, instructions, law enforcement orders, news read from screen prompts within the allotted time, and literature that authors expect will be available to the reader for re-reading tend to maximize lexical density.