Monument
Part of speech: noun
Definition: A structure built for commemorative or symbolic reasons, or as a memorial; a commemoration. An important site owned by the community as a whole. An exceptionally or prideful achievement. An important burial vault or tomb. A legal document. A surveying reference point marked by a permanently fixed marker (a survey monument).
Memorial
Part of speech: noun
Definition: A structure, such as a monument, intended to celebrate the memory of a person or eventA service of remembrance or commemorationIn law: a statement of facts set out in the form of a petition to a person in authority, a court or tribunal, a government, etc.
Part of speech: adjective
Definition: Serving as a remembrance of someone or something; commemorative
Example sentence: And there's the Victoria Memorial, built as a memorial to Victoria.