H and C, on faucets

• Enemies, in slang
• Near and far, e.g.: Abbr
• They may be polar: Abbr
• Antonyms: Abbr.
• Stop and go, e.g.: Abbr
• They sometimes attract: Abbr
• Big and small, e.g.: Abbr
• Pos. and neg

Wiktionary Word definitions in Wiktionary
interj. (misspelling of oops English)