A type of word that refers anaphorically to a noun or noun phrase, but which cannot ordinarily be preceded by a determiner and rarely takes an attributive adjective.
Any of the pronouns by which a person prefers to be described, typically reflecting gender identity.
A word or phrase with a meaning that is the same as, or very similar to, another word or phrase.
An alternative (often shorter) name defined for an object in a database.
Any name for a taxon, usually a validly published, formally accepted one, but often also an unpublished name.
A word whose meaning is the same as that of another word.
Any of the formal names for a taxon, including the valid name (i.e. the senior synonym).