This is the 11879th most frequent Korean word.
넘치고
"넘치고" means "overflowing" or "exceeding."
In this sentence, '넘치고 있어요' refers to the action of overflowing or being in excess, applied to her passion in a figurative sense.
그녀의 열정이 넘치고 있어요.
Her passion is overflowing.
Here, '넘치고 있어요' describes the physical action of water overflowing, providing a literal usage of the term.
물이 넘치고 있어요.
The water is overflowing.
In this third sentence, '넘치고 있었습니다' indicates a figurative overflowing of joy experienced by people, using past tense for description.