context: Corvettes are a type of warship that is smaller than a frigate and bigger than a beach patrol boat, although many of the latest designs are the same as a frigate in size and duty. Usually included as a patrol boat capable of carrying out ambush and assault operations independently. The term corvette itself was introduced by the French Navy in the 17th century to refer to a small ship (usually carrying 20 cannons) which was used to protect merchant ships and offshore patrols. The British Navy later also adopted this term in the 19th century.
question: What is a corvette?
answers.text: a type of warship that is smaller than a frigate and bigger than a beach patrol boat, although many of the latest designs are the same as a frigate in size and duty