blockade

As a noun blockade

is blockade.

As an adjective undefined is

lacking a definition or value.

Surround is a related term of blockade.

As nouns the difference between surround and blockade

is that surround is (british) anything, such as a fence or border, that surrounds something while blockade is blockade.

As a verb surround

is (label) to encircle something or simultaneously extend in all directions.

As nouns the difference between blockade and barrage

is that blockade is blockade while barrage is barrier.

As nouns the difference between blockade and invasion

is that blockade is the physical blocking or surrounding of a place, especially a port, in order to prevent commerce and traffic in or out while invasion is a military action consisting of armed forces of one geopolitical entity entering territory controlled by another such entity, generally with the objective of conquering territory or altering the established government.

As a verb blockade

is to create a blockade against.

As a noun blockade

is blockade.

As a verb invade is

to move into.

As nouns the difference between blockade and restriction

is that blockade is blockade while restriction is the act of restricting, or the state of being restricted.

As nouns the difference between lockdown and blockade

is that lockdown is (in an institution, such as a prison or school) The confinement of people in their own rooms (or cells) as a security measure after a disturbance while blockade is the physical blocking or surrounding of a place, especially a port, in order to prevent commerce and traffic in or out.

As a verb blockade is

to create a blockade against.

As a verb besieged

is (besiege).

As a noun blockade is

blockade.

As nouns the difference between blockade and enclosure

is that blockade is blockade while enclosure is (countable) something enclosed, ie inserted into a letter or similar package.

In transitive terms the difference between blockade and interdict

is that blockade is to create a blockade against while interdict is to forbid (someone) from doing something.