Trousers is a general term used in the clothing industry. It is a pair of pants that are tailored. Generally, a trouser is a type of formal clothing widely used for meetings or any other official function.Chinos are the prime example of business casual, while formal trousers are elegant and classy. A chino can be combined with sneakers as well as with boots and oxford shoes. Formal trousers, on the other hand, only look truly sharp when worn with lace-up shoes or loafersJeans are usually considered business casual, with some exceptions. Business casual jeans should be clean and in good condition, free of any tears, fading or fraying. Avoid bright-colored jeans or styles that have flashy details, in favor of classic styles that you can pair with accessories or layers as needed.