Words in harmony: contrasting "affinity" and "rapport"

What is similar?
Both "affinity" and "rapport" refer to a positive connection or relationship between people or things, characterized by mutual understanding, sympathy, or attraction.
What is different?
"Affinity" often implies a natural liking or inherent connection, which can be between people or even broader concepts like affinity for a type of music. "Rapport", on the other hand, specifically refers to a harmonious or sympathetic relationship between people, often built through interaction and communication.
Which one is more common?

Examples of usage
Affinity- She felt an immediate affinity for the new city she moved to.
- His affinity for classical music began when he was a child.
- The therapist quickly established a rapport with her patient.
- Building a good rapport with your colleagues can improve teamwork.