A differentiating feature is something that sets apart or distinguishes one thing from another. It is a unique or special characteristic that makes something or someone stand out or be different from the others. Full definition
The most important differentiating feature of a modern resume is that it's always a text - only document and does not necessarily include the image of the applicant. (template.net)
Various types of term insurance plans are being offered by the company with differentiated features. (policybazaar.com)
The listed items above are the main differentiating features: size, memory, and connectivity. (dearauthor.com)