What is the basic difference between A.C generator and D.C generator?

What is the basic difference between A.C generator and D.C generator?

(i) In A.C generator, slip-ring type commutator is used and in D.C generator split-ring
type commutator is used.

(ii) A.C generator converts mechanical energy into electrical energy in the form of alternating current.
D.C generator converts mechanical energy into electrical energy in the form of direct current.