This is the 263rd most frequent Vietnamese word.
đầy
"Đầy" means "full" in English.
The word 'đầy' here is used to signify 'full of', describing that the room is filled with people.
Căn phòng này rất đầy người.
This room is very full of people.
The word 'đầy' in this sentence means 'full', indicating that the glass now is containing water up to its capacity.
Chiếc ly này đã đầy nước.
This glass is already full of water.
Here 'đầy' is used in a figurative sense, meaning 'full of' in terms of emotions or qualities.