This is the 6477th most frequent Russian word.
age
The Russian word "age" (а́ге) is not a standard Russian word; it may be a transliteration error or slang.
The word 'возрасте' (a form of 'возраст') is used to specifically refer to age in years, particularly asking when something occurred.
В каком возрасте ты начал учиться играть на гитаре?
At what age did you start learning to play the guitar?
Here 'возрастом' (another form of 'возраст') is used to express the process of aging or the change of preferences as one grows older.
Удивительно, как с возрастом меняются наши интересы.
It's amazing how our interests change with age.
'Возраст' in this case represents the average measure of years of the group's members' life spans.