What Is The Difference Between Dharmashastras And Dharmasutras?

What Is The Difference Between Dharmashastras And Dharmasutras? There are two kinds of Smritis viz. Dharmasutras and Dharmashastras. Their subject matter is almost the same. The difference is that the Dharmasutras are written in prose, in short maxims (Sutras) and the Dharmashastras are composed in poetry (Shlokas). Which of the following is also known as