区别就是两者意思是不一样的具体的不同如下
cob中文意思是n. 雄天鹅玉米穗轴结实的矮脚马圆块，vt. 捣碎
Here's a way of barbecuing corn-on-the-cob that I learned from my uncle.
corn中文意思是n. 谷物，谷粒玉米鸡眼老一套，煽情的东西，v. 腌（肉类等）使成粒状
She pounded the corn kernels.
