Sure! So, for starters, you want to compare and contrast two things that are similar, not very different. For example, you would compare and contrast reading a book to listening to an e-book, and you would not compare and contrast reading a book to ridding a bus.
so, for an example of this:
Reading a book is the same as listening to an e-book because both ways you are getting the same information. Reading a book and listening to an e-book are different because reading needs, you guessed it, reading, but you don't need to read to listen to an e-book.
Hope this helps!