Dunce and Wing nut

Dunce noun - A stupid person.

Wing nut and dunce are semantically related. (North American) in doofus topic. In some cases you can use "Wing nut" instead a noun "Dunce". informal substitute

Wing nut noun - Any tree of the genus Pterocarya; fruit is a small winged nutlet; Caucasus to southeastern Asia.

Dunce and wing nut are semantically related. Sometimes you can replace term "Dunce" with "Wing nut", this terms are similar.