Could somebody please explain why [[Water chestnut]] is a disambiguation page (with, in my opinion, neither splitting article really doing a good job of describing the tuber that most English-speaking people are familiar with from either a grocery store can or their local Chinese restaurant), while [[Corn]] (which redirects to [[Maize]]) is a really nice article that talks about the corn we all know and love, while having a convenient, unobtrusive "disambig" flag at the top?
Doesn't the water chestnut deserve a little better than this confusing disambiguation page? It's a pretty common food. Does the Wikipedia community really expect users to find their way specifically to [[Eleocharis dulcis]] to get a half-decent write-up on the water chestnuts that many of their recipes call for?
It would appear that two different plants are known as "Water chestnut" and neither is significantly more important than the other, so we have a disambig page. It's standard practice. What would you have instead?