1、high是形容词，height是名词。2、high的意思是高的，height的意思是高。3、用法不同：high跟在系动词后面，如is high，或修饰名词，如a high mountain一座高山；height本身是名词可以当主语，或of height之类的用法。
height例句
1.The crisis was at its height in May.
危机在五月份到了最严重的关头。
2.He must have fallen from a great height.
他肯定是从很高的地方摔下来的。
3.It would be the height of folly to change course now.
现在改变方向可谓愚蠢至极。
high例句
1.The cost in terms of human life was high.
付出了很大的生命代价。
2.It's about this high.
大约有这么高。
3.People in this country enjoy a high standard of living.
这个国家的人民享有很高的生活水平