This is the 5365th most frequent Turkish word.
kocaman
Very big; huge.
The word 'kocaman' describes the magnitude or size of the mountain, emphasizing its grandeur.
Kocaman bir dağ gördüm.
I saw a gigantic mountain.
Here, 'kocaman' metaphorically emphasizes the great kindness or generosity symbolized by 'heart'.
Kocaman bir yürekle yardım etti.
They helped with a big heart.
'Kocaman' here defines the large size of the student group, highlighting their number or presence.