Prior to the Decalogue, the only commandment explicitly given to the Children of Israel was the observance of Shabbat. Yet, Moshe, in describing his responsibilities to Yitro in 18:16, includes "וְהוֹדַעְתִּי אֶת חֻקֵּי הָאֱלֹהִים וְאֶת תּוֹרֹתָיו", and Yitro reflects this back a couple of verses later "וְהִזְהַרְתָּה אֶתְהֶם אֶת הַחֻקִּים וְאֶת הַתּוֹרֹת". To what statutes and laws do Moshe and Yitro refer?
"חֻקִּים" / "תּוֹרֹת"
The Torah employs various terms to refer to categories of laws – see חק for analysis of the relationships between different terms. Why do Moshe and Yitro employ dual terminology? Do the terms "חֻקִּים" and "תּוֹרֹת" used here refer to a single set of laws or to multiple groups? To which laws do they refer?