How do i integrate the contents of one table into another in mysql?

I have a site that runs on wordpress. I changed hosts recently so i had to do a database restore into the new host. However i noticed that some of the tables haven't been restored properly. I want to know if there is a way in which i can restore those specific tables without overwriting data. (just insert what has been missed). I am a complete newbie in this matter. Someone please help.