I'm looking for words to define grade levels from babies to adults.
According to what I've found on Baidu, the basic division is:
婴儿 - 0 to 3 years old
幼儿 - 3 to 6 years old
启蒙 - 7 to 10 years old
逆反 - 11 to 14 years old
成长 - 15 to 17 years old
成年 - 18+ years old
But according to the dictionary, 启蒙 and 逆反 mean "to initiate" and "rebellious behavior", which doesn't seem to relate to age at all.
Are there better words to add up to 级 to define these grades?