A common mistake in English is when people use similar words in a different context. Some words are pronounced in almost the same way and people get confused sometimes when to use which word.
One of the most common mistakes in English is when people use than or then in the wrong context. These words are pronounced in the same way but have completely different meanings. You have an overview of the difference in meaning below:
|than||in a comparison||I am taller than my brother.|
|then||as a time reference||Work comes first, then you can relax.|