polysemy
When one word has several related meanings, such as cell or current.
figurative
Used in a non-literal way to create a comparison or image.
slang
Very informal words used by particular groups, often changing quickly.
glossary
An alphabetical list of specialized terms with definitions, usually at the back of a book or report.
etymology
The origin and history of a word.
connotation
The feelings and associations a word carries beyond its dictionary meaning.
synonym
A word with a similar core meaning to another, often differing in connotation or intensity.