Source: Lexico Dictionary Definitions:
1a) set the boundaries or limits of.
Example: “plots of land demarcated by barbed wire”
1b) separate or distinguish from; to separate clearly in other ways
Example: “art was being demarcated from the more objective science”
2a) describe or portray (something) precisely:
Example: “the law should delineate and prohibit behavior that is socially abhorrent”
2b) indicate the exact position of (a border or boundary).
Example: The police delineated the crime scene with yellow tape.
A hedge delineates one plot of land from the other