The coast guard is on duty to assist boaters in trouble along this shore.
One function of the US Coast Guard is to interdict drug smuggling.
The bright orange inflatable liferaft was spotted by the Coast Guard, who took off the four survivors.
The word "guard" can mean different things depending on context. An example sentence of the word "guard", when used to describe a person protecting an object, person of place would be "The guard watched the empty doorway, his back to the display case."
When I'm older I want to live on the west coast. "The waves roared as she drowned off the coast of Florida."
The guard outside the mansion looks strong! How can I sneak in?
The guard orders the intruder to freeze.We will guard the ship.The crown jewels are under heavy armed guard.
The guard was very unwary of the town
Just show your membership card to the guard, and he will let you in. The hungry dog will guard his food.
Example sentence - The gun had a trigger guard on it for safety reasons.
Actually, the word "guard" is a noun already. It can also be a verb. It all depends on how it is used in a sentence. For example, as a verb: The soldiers guarded the supply truck. But as a noun: The guard is standing at the front gate. So, a guard can be a person, or it can describe an action.
The common noun is coast, a general word for any land adjoining the sea; a word for any coast anywhere.
The crossing guard sent a signal to the children.