There are a lot of names for seats and confusion around what they mean, so here's a simple breakdown of what's what.
This refers to a two seat layout with a space in between, often with a console in the middle. This is the layout seen in the vast majority of the front seat of cars.
Typically this refers to bucket seats with built in folding arm rests.
Full Bench Seat
Often just called a bench seat, this is a single solitary cushion that goes across 100% of the width of the vehicle.
Split Bench Seat
This is one of the most common layouts. This is when the seats are split into two or three sections. Types of split bench seat are listed below.
This is a three seater bench in three separate sections. The numbers refer to an approximate percentage that each seat takes up of the vehicle. The center seat, or jump seat, takes up only 20% of the room. The drivers & passengers seat are typically wider.
This is a three seater bench seat in two sections. Typically the drivers seat is independent and seats only one, and the passengers seat fits two people, and is about 60% of the width of the vehicle. There are some vehicles that make the drivers seat the larger section.