yes it's same.it's 儿化音er hua yin . for example 出去玩&出去玩儿 看一会电视&看一会儿电视 雨点&雨点儿 the meaning are same 儿话音is usually used in north of China .people in south of China nearly dont use it . better if i can send a voice msg to you ,then you can understand easily

是滴，核儿是核的儿化音，一种表达方式，儿化音在北京方言比较普遍，不知道你能理解这一段话不

可以