the isthmus joining North America and South America; extends from the southern border of Mexico to the northern border of Colombia
is a part of
the parts of North America and South America to the south of the United States where Romance languages are spoken
is a part of
North America and South America and Central America
is a part of
a continent (the third largest) in the western hemisphere connected to South America by the Isthmus of Panama
is an instance of (narrower)
a relatively narrow strip of land (with water on both sides) connecting two larger land areas