I think I created the vanguard tag for Why would low pump inlet pressure result in such a spectacular explosion? (Vanguard TV3) and now I'm not sure of the connection between the Vanguard spacecraft, Vanguard rocket, and Project Vanguard.
Did any of these draw their names from another? Are they closely linked, do they overlap, or are they fairly unrelated except for containing the word "Vanguard" in their names?