What is the difference between “then” and “than”?

I want to know the difference between “then” and “than”, when i use it and how, because the pronounce is very similar?

Answer

When you compare two things, people or situations, you use than. For example, I am taller than you. Your car is more expensive than my car. Life is harder in our country than in your country.

The adverb then is used in many senses, some of which are as follows:

1- Meaning at that time. Then is used to refer to a particular time in the past or future. For example: I am coming to the party. I'll see you then. I went to the party yesterday. I met many old friends then.

2- Then also indicates order of events. I'll read the letter first, then I'll give my advice