1.
: The first stage of development after birth
2.
: A young child aged about one to three years
3.
: The life stage before adolescence
4.
: The teenage period between childhood and adulthood
5.
: The stage of maturity or full development
6.
: Physical increase in size or development
7.
: The process of change and maturation over time
8.
: The biological process of reaching sexual maturity
9.
: Chemical messengers influencing development
10.
: Relating to thinking, understanding, or processing information
11.
: Connected to feelings and mood
12.
: Pertaining to bodily growth or attributes
13.
: Concerning interaction between individuals
14.
: Key developmental achievements or stages
15.
: The acquisition of knowledge or skills
16.
: One's sense of self or who they are
17.
: The process of becoming fully developed
18.
: Emotional bond formed, often early in life
19.
: The ability to make decisions and act on one's own
20.
: The total length of a person’s life from birth to death
