refrigerator的科林斯词典解释：[N-COUNT]
A refrigerator is a large container which is kept cool inside, usually by electricity, so that the food and drink in it stays fresh. =fridge
翻译过来就是普通的冰箱之意。有冷藏室，冷冻室什么的。
freezer的科林斯词典解释
[N-COUNT]
A freezer is a large container like a fridge in which the temperature is kept below freezing point so that you can store food inside it for long periods.
翻译过来就是贮存温度低于0度的冰柜
其实两者区别不是很大。