This is the 167th most frequent Turkish word.
gelecek
"Future"
Here, 'gelecek' as a verb form is used to mean 'will come', indicating a future action.
Toplantıya gelecek birkaç kişi daha var.
There are a few more people who will attend the meeting.
Here, 'Gelecek' is used as an adjective meaning 'next', modifying 'hafta' (week).
Gelecek hafta yeni bir projeye başlayacağız.
Next week, we will start a new project.
In this sentence, 'Gelecek' functions as a noun meaning 'future'.