1. Different definitions: ticket stub refers to a part of a bill, which contains important information of the bill, such as bill number, invoice date, face value, payee, etc. Tickets refer to vouchers used to enter a place or participate in an activity, such as concert tickets and movie tickets.

2. Different functions: the ticket stub is mainly used to record the information of the bill, which is convenient for the management and verification of the bill. Tickets are used to verify the identity and qualifications of participants and ensure that they can legally enter the venue or participate in activities.

3. Different scope of use: ticket stubs are bills used in commercial transactions, such as invoices, receipts, checks, etc. Tickets are used for entertainment, culture, sports and other activities and places.

4. Different appearance: the ticket stub is a relatively small piece of paper with relevant information of the bill printed on it, which can be used as a part of the bill. A ticket is a relatively large piece of paper or card with information such as the name, time and place of the event or place, as well as related patterns and signs printed on it. To sum up, although ticket stub and ticket are concepts related to bills, they are obviously different in definition, function, application scope and appearance.