[IIsi50MHz]

"I'd like to see that film." | "I'd like to watch that film." (interchangeable)

"I see birds." / "I watch birds." (very different)

"I'm seeing birds." ~ "I'm watching birds." (semantic'ly identical, but the first one is unusual)

"I'll see you home." / "I'll watch you home." (second on is word choice error)