TestNG : Hard vs Soft assertion

Soft : Test Fails for sure, but execution Do not Stops even any assertion condition fails.
SoftAssert s = new SoftAssert();
s.assertEquls(1,1);
s.assertEquls(2,1);
s.assertAll();

Hard: Test Fails & STOPS then and their where any assertion condition fails.
Assertion a = new Assertion();
a.assertEquls(1,1);