1. Scope of services
2. Specific resources to perform work
3. Change in staff terms
4. Price
5. Termination notice and penalty
6. Late payment penalties
7. Payment terms (net 30 etc)
8. Revenue sharing
9. Equity sharing
10. Intellectual property control
11. Indemnification
12. Etc.

This difference in valuing different aspects can be useful for reaching a mutually satisfactory outcome and getting past a deadlock. There can be give and take in different areas.