The Volokh Conspiracy - -Tion/-Sion Verbs That Aren't Also Nouns:

A puzzle from Michael Lorton:

Most words that end in -tion or -sion are nouns, but some are also verbs: consider mention, proposition, question, section, and station. What words that end in -tion or -sion are verbs but not nouns?

UPDATE: "Stunning, overwhelming thread victory."

	[Eugene Volokh, March 11, 2008 at 4:07pm] Trackbacks -Tion/-Sion Verbs That Aren't Also Nouns: A puzzle from Michael Lorton: Most words that end in -tion or -sion are nouns, but some are also verbs: consider mention, proposition, question, section, and station. What words that end in -tion or -sion are verbs but not nouns? UPDATE: "Stunning, overwhelming thread victory."