Basic websites contain a few pages of content and include the legal statements and Search Engine requirements (About, Contact, Privacy pages etc.) but are designed to work for your business by way of getting you new leads. Once built, it's all about the marketing.
You may need more than a basic trader's website and so the Intermediate sized website build would be ideal for you. This may need to contain more pages, be more interactive and collect leads from your Sales Funnel on an ongoing basis. You can also take payments.
Small or Medium Business?
Catering for the all-singing, all-dancing website that is a 24/7 workhorse, these websites are normally much larger and are ready for an onslaught of busy traffic. They may also be specialist builds for Online Courses or eCommerce.