Depending on the style and theme of your living room, it’s possible to mix and match pieces of living room furniture, including tables. Your end tables do not need to be from the same collection as your coffee table and sofa tables. The only thing that matters is that your tables are thematically consistent. You want your furniture to work well together. If you have a thematically rustic furnished room, for example, you want all of your furniture to follow suit. Beyond theme, however, your individual pieces can come from a variety of collections.
Some coffee tables come in a complete set with matching end tables and sofa tables. This might be an option for some people who prefer consistency, or who have little time to devote to redecorating. You might also consider whether you need each time of table in your space.
Although coffee tables are standard in every living room, not every room has space or need for a sofa table. You need to think of the room, and your needs in terms of space, decoration, and function; whatever your decorating desires, you will find occasional tables that work for you.