1、含义不同
anything but为习语，意为“根本不是”“一点不是”。
nothing but也是习语，意为“仅仅”“只”。
2、用法不同
anything but 有时可单独使用，不仅可用于事物，也可用于人。
nothing but后面可接名词或代词、不定式。
扩展资料：
anything but
1 You don't care about anything but yourself and your precious face.
你什么都不关心，除了你自己和你那张娇贵的脸。
2 He didn't speak anything but Greek
他只会说希腊语。
3 I will be anything but quiet on Saturday night!
星期六的晚上我根本静不下心来！
4 There's no evidence that he told anyone to say anything but the truth
并无证据表明他让什么人隐瞒真相。
nothing but
1 I have nothing but praise for the police
我对警方唯有称赞。
2 He said nothing but gave me a sly grin that made me feel terribly uneasy
他什么也没说，只是朝我狡黠地笑了笑，这让我感到极其不安。
3 All that money brought nothing but sadness and misery and tragedy.
那笔钱带来的只有伤心、痛苦和悲剧。
4 He heard nothing but the echoes of his own voice.
他只听见了自己的回音。
5 You'll buy nothing but trouble if you buy that house, take my word for it.
你要是买那栋房子只会买来麻烦，我说的都是真的。