Adolescence /ˌæd

connection /kəˈnek.ʃ ə n/ noun RELATION
1. [ C ] when someone or something is related to someone or something else
The connection between smoking and heart disease is well known.
They're sisters, are they? I knew their surname was the same, but I never made (= thought of) the connection.
2. in connection with sth
on the subject of something
They want to talk to you in connection with an unpaid tax bill.
fatherhood /ˈfɑː.ðə.hʊd/ /-ðɚ-/ noun [ U ]
the state or time of being a father
Fatherhood is a lifelong responsibility.
friendship /ˈfren d  .ʃɪp/ noun [ C or U ]
when two people are friends
Their friendship goes back to when they were at school together.
Did you form any close/lasting friendships while you were at college?
I value her friendship above anything else.
instinct /ˈɪn.stɪŋkt/ noun [ C or U ]
the way people or animals naturally react or behave, without having to think or learn about it
All his instincts told him to stay near the car and wait for help.
[ + to infinitive ] Her first instinct was to run.
It is instinct that tells the birds when to begin their migration.
figurative Bob seems to have an instinct for (= is naturally good at) knowing which products will sell.
interaction /ˌɪn.təˈræk.ʃ ə n/ /-t ̬ɚ-/ noun [ C or U ]
when two or more people or things communicate with or react to each other
There's not enough interaction between the management and the workers.
Language games are usually intended to encourage student interaction.
The play follows the interactions of three very different characters.
motherhood /ˈmʌð.ə.hʊd/ /-ɚ-/ noun [ U ]
the state or time of being a mother
I don't feel ready for motherhood yet.