데려가다(de-ryeo-ga-da, deryeogada)
Means to take someone from the current location to another place.
When to use
Going to friend's house, Sending child to school, Accompanying to hospital
The nuance
Used when moving a person from the speaker’s or reference point’s location to a different place.
데려오다(de-ryeo-o-da, deryeooda)
Means to bring someone from another place to the current location.
When to use
From friend's house to home, From school to home, From hospital to home
The nuance
Used when moving a person from another place to the speaker’s or reference point’s location.