Essentially they are the same, booklets are used for non-commercial promotion, while brochures are used to advertise products and services. Brochures also typically have more pages and images. Booklets have multiple pages, but generally contain fewer pages and more words than images to inform the reader. Both are brought together with a saddle stitch, spiral, wiro, rivets or perfect binding.
Flyers, leaflets, booklets and brochures are all recyclable. The recycling process removes and separates any laminating film. 'Green' lamination film made from ultra fine paper fibres is a compostable product.