What is the difference between Ocean and Sea?

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Seas usually located where land and Ocean meet

Seas are smaller than Oceans

There are more Seas than Oceans

All of the above

The differences between oceans and seas:

Location: Seas are often where land meets the ocean, such as the Mediterranean or Red Sea. Oceans are vast, covering large areas of the Earth's surface, like the Pacific or Atlantic Ocean.
Size: Seas are smaller than oceans. Oceans cover over 70% of Earth's surface, while seas cover only a small fraction.
Number: There are more seas than oceans. The International Hydrographic Organization (IHO) recognizes 64 seas and 5 oceans.