If you are planning to buy a sofa then first you should know about the basic idea of a sofa. There are so many types of sofa you can choose from, as per your choice and space. the different types of sofas are as follows :-
Tuxedo sofa- This type of sofa is recognized by its high arm ( as high as it's back), lean design and slender steel legs.
English sofa- The type of sofa is known for its rolled and low height arms.
Sectional sofa- This type of sofa can be arranged in a number of ways according to usability. Generally it is found in L- shape and U -shape and occupies a large space.
Chaise lounge- These sofas may or may not have arms and are generally used in the master bedroom or poolside.
Loveseat- This is a stylish two seater sofa used in bedrooms , reception areas, living rooms etc.
Settee - This type of sofa is famous for its antique look and is used for waiting areas or living rooms.
Recliner sofa- If you are looking for a sofa for your living room then as an interior designer I will suggest you to have this, just because of its stylish look and comfortability.
Modern sofa- It's simplicity makes it different from others.
Camelback sofa- The main feature of this sofa is its extra high back in the centre and two arches on the back.
Cabriole sofa- This type of sofa comes in both antique and contemporary look, having arms curving inward and at equal height with the back.
Convertible sofa cum bed- As it is clear by it's name, this sofa can be converted into bed by extending its seat.
Futon- This is also a convertible sofa and can be converted into bed by turning down its back.
Chesterfield sofa- This is famous for its tufted style on its arm, back and seat.
Lawson sofa- The heavy and highly comfortable seats , designed to decorate with contrast coloured cushions gives it a gorgeous look.
Divan- It is also known as no back sofa which comes in both antique and modern look. Sometimes it can be used for sleeping purposes also.
I hope after getting this information about the sofa it will be easier to choose one as per your choice and space.