What's the difference between cuckold and cuckoldry?

Cuckold

Definition:

(v. t.) To make a cuckold of, as a husband, by seducing his wife, or by her becoming an adulteress.
(n.) A man whose wife is unfaithful; the husband of an adulteress.
(n.) A West Indian plectognath fish (Ostracion triqueter).
(n.) The cowfish.

Example Sentences:

(1) It was the ultimate humiliation for a French politician who sought to be strong and in control of everything around him: Sarkozy was publicly cuckolded.
(2) Male bluegill (Lepomis macrochirus) display a complex reproductive behavior involving two alternative life history pathways: delay of sexual maturation to become "parentals" or precocious maturation as "cuckolders."
(3) Picardo told Reuters on Monday that the European council president, Donald Tusk, was “behaving like a cuckolded husband who is taking it out on the children” over the Gibraltar clause.
(4) Its real-life story-line featured Parisian car-chases, New York hideaways, cuckolding, censorship, power games and one of the biggest jobs in European politics.
(5) Compared to spawning parental males, spawning cuckolder males had significantly lower serum levels of 11KT.
(6) In contrast, the serum levels of T among parental and cuckolder males were not significantly different.
(7) Kenwright is neither cuckolded husband nor deceived parent – and yet, somehow, has contrived to detect, not only feelings, but distinct ones, that he can identify, separate, name and possess.
(8) Still, on it plods, aeons passing with every will-sapping shot of Alfie crying in a doorway, his cuckolded jowls flapping like windsocks.
(9) And not just because of Uncle Bryn – it was a trait shared by Keith Barret, the melancholic Welsh cuckold who was the star of Marion and Geoff .
(10) The Dilemma , which largely consists of Vince Vaughn sweating over whether to tell his best buddy he's been cuckolded, is equally painful to watch in its desperate attempts to manufacture comedy.
(11) Earlier when the Mexican referee, Marco Antonio Rodríguez Moreno, showed Marchisio a red card, @nicoperdire had posted a tweet that said: “Referee’s wife confirms: he’s a cuckold.” Italian fans had feared the worst when they learned of the official’s surname.
(12) They include Baz Luhrmann's very-big-deal-of a Gatsby adaptation in which Clarke plays Wilson, the cuckolded mechanic, to Leonardo DiCaprio's Gatsby and Carey Mulligan's Daisy.
(13) Often these were costume pictures about historical personages, ranging from Lady Hamilton (1967) - he played the cuckolded Sir William Hamilton - to Lady Caroline Lamb (1972), with Mills as George Canning.