"___ are so stimulating" (Katharine Hepburn)

• The Bloods and the Crips, e.g
• North and South Korea, e.g
• Robin Hood and the Sheriff of Nottingham, e.g
• Ones at the gate, maybe
• " . . . naked to mine ___": Shak.
• Nixon kept a list of these
• They're against us
• The Hatfields and the McCoys, e.g
• Members of the Legion of Doom, to members of the Justice League

Wiktionary Word definitions in Wiktionary
n. (enemy English)