What is the difference with 'in memory of' and 'in honor of'

What is the difference with 'in memory of' and 'in honor of' what is the difference of greetings in China and British in memory of ,与 in honor of 有和区别? in honor of in memory of 求翻译 in memory of等于in honor of吗 in want of 和in need of什么区别?in honor of 和in memory of呢? 都不太明白.1、what is the difference between the value of 4 in 647 what is the difference of practice and practise What is the difference of Mandarin and cantonese What is the difference of electron affinity and electronegat in honor of the occasion是什么意思啊. What is the difference between "INCOME" and "REVENUE" in acc