Question

what is the difference between isthmus and strait..?

Answer 1

That is, while a strait lies between two land masses and connects two larger bodies of water, an isthmus lies between two bodies of water and connects two larger land masses.

Answer 2

A strait is a narrow body of water conecting 2 larger bodies of water and an isthmus is a narrow strip of land having water a each side and connecting 2 larger bodies of land.