Whereas a "shore" can be any areas where a body of water interacts with the land, the term "coast" is usually applied to the borders of "open seas" or oceans. It also would include a specific geographical section rather than the entire periphery (e.g. Florida Gulf Coast, US Atlantic Coast, South African coast).
east coast
chicaco
The east coast of North America, west coast of africa
The county of Dublin and the city of Dublin are on the east coast of Ireland.
One example is rabbits.
Passive
North America coast people
Florida along the Gulf Coast to Texas.
yes in the UK an example is the white cliffs of Dover
Oil
An example of a surface current along the east coast is the Gulf Stream. It is a strong, warm ocean current that flows northward along the east coast of the United States from the Gulf of Mexico towards Europe. The Gulf Stream has a significant impact on the climate and weather of the east coast due to its warm waters.
No, the word 'coast' is not a collective noun.