Here are some examples:
* Riker and Picard: Their relationship was often strained due to their differing leadership styles and ambitions.
* Data and Lore: Data's struggle with his identity and Lore's manipulative nature caused a great deal of tension.
* Worf and Troi: Worf's Klingon heritage and Troi's empathy led to clashes in their communication styles.
* Beverly Crusher and Dr. Katherine Pulaski: They clashed over their personalities and approaches to medicine.
* The crew's differing opinions on ethical issues: The crew often had to grapple with difficult moral dilemmas, leading to conflicts in their beliefs.
The series tackled these complexities by exploring the characters' growth and how they learned to work through their differences. Ultimately, their shared mission and dedication to the ideals of Starfleet brought them together, even when faced with challenges.
So, while they weren't a perfectly harmonious group, the crew of the Enterprise-D generally had a strong sense of unity and respect for each other, which allowed them to overcome their challenges and achieve their goals.