Strait of Dover vs Strait of Calais

Strait of Dover and Strait of Calais both are nouns.

Word	Noun	Adjective	Verb	Adverb
Strait of Dover	Yes	No	No	No
Strait of Calais	Yes	No	No	No

As nouns, Strait of Dover and Strait of Calais are synonyms defined as:

Strait of Dover and Strait of Calais: the strait between the English Channel and the North Sea; shortest distance between England and the European continent

Other synonyms of Strait of Dover include Pas de Calais.

Strait of Dover (noun)	Strait of Calais (noun)
the strait between the English Channel and the North Sea; shortest distance between England and the European continent	the strait between the English Channel and the North Sea; shortest distance between England and the European continent