- Southern Cross, Crux, Crux Australis - a small conspicuous constellation in the southern hemisphere in the Milky Way near Centaurus
--1 is a kind of constellation
--1 is a member of Milky Way, Milky Way Galaxy, Milky Way System
--1 has members: Alpha Crucis; Beta Crucis - crux, crux of the matter - the most important point
--2 is a kind of point
--2 has particulars: alpha and omega