some regionals, mostly turboprops and maybe very few senior lines at RJ companies have you start and end at your home base everyday.

Most other lines have you starting and ending back at your home base every 2, 3, 4, or even 5 days. Thats why its called a "trip". They put you up in a hotel when your not at your homebase (unless its mesa they may ask you to sleep in the plane)

but i hope that your not just figuring this stuff out as a CFI, cause as you can see it can be a real burden to having a family