This is the 72nd most frequent Norwegian word.
gammel
Old.
Here, 'gammel' (adjusted to 'gammelt' for the neuter noun 'huset') is used as an adjective to describe the age of the house.
Huset er gammelt og trenger oppussing.
The house is old and needs renovation.
In this sentence, 'gammel' describes a long-standing relationship with the friend.
Dette er en gammel venn av meg.
This is an old friend of mine.
Here, 'gammel' (adjusted to 'gammelt' to match the neuter noun 'foto') indicates that the photo was taken a long time ago.