“Aharei Mot” means “after the death”, referring to the demise of Aaron’s sons Nadab and Abihu who offered fire in a way not sanctioned by Abba YHWH. The portion begins with the purification measures that Aaron and his remaining sons need to go through to rectify the evil that was done in Abba YHWH’s sight. Once done, additional purity regulations are given on how native Israelites are to slaughter and handle blood. Abba YHWH then opens the last chapter in this portion by reminding Israel that they are not to do the practices of the peoples either from where they came from (Egypt) or where they are going (Canaan) but must remain a Set-Apart people. In order to do this, the portion closes with additional regulations of proper and improper sexual conduct.
“Kedoshim” means “you shall be Set-Apart”. This is a kind of “Cliff Notes” style discussion of some of the main themes of the overall Torah. It includes some of the Ten Words (Commandments) but not all of them, and wraps around the ones it does include with either brief application advice or other commands that the text didn’t have the chance to get to yet.