When it comes to describing a "bill of right," there are a number of terms that can be used interchangeably. Some synonyms for this phrase include "charter of rights," "declaration of rights," "constitutional rights," and "fundamental rights." These terms all refer to a legal document that outlines the individual rights and liberties that are guaranteed to citizens within a given jurisdiction. Whether it's a national constitution, a state charter, or a municipal ordinance, bills of right serve an important function in protecting the civil liberties of individuals and checking the power of governments and other public institutions.