Adolescence /ˌæd

relation /rɪˈleɪ.ʃ ə n/ noun CONNECTION
2. [ U ] the connection or similarity between two things
The relation between the original book and this new film is very faint.
She bears no relation to (= She is not similar to) her brother.
3. in/with relation to sth
in connection with something
She used the map to discover where she was in relation to her surroundings.
relationship /rɪˈleɪ.ʃ ə n.ʃɪp/ noun [ C ] CONNECTION
1. the way in which two things are connected
Scientists have established the relationship between lung cancer and smoking.
relative /ˈrel.ə.tɪv/ /-t ̬ɪv/ noun [ C ] ( Australian informal rellie )
a member of your family
I haven't got many blood relatives (= people related to me by birth rather than by marriage) .
All her close/distant relatives came to the wedding.
resemblance /rɪˈzem.blən t  s/ noun [ C or U ]
when two people or things look like each other or are similar in some other way
There was a clear family resemblance between all the brothers.
These prices bear no resemblance to (= are completely different from) the ones I saw printed in the newspaper.
rivalry /ˈraɪ.v ə l.ri/ noun [ C or U ]
when people, businesses, etc. compete with each other for the same thing
There's such rivalry among/between my three sons.
There's fierce rivalry for the job/ to get the job.
sibling /ˈsɪb.lɪŋ/ noun [ C ] formal
a brother or sister
I have four siblings: three brothers and a sister.
There was great sibling rivalry (= competition) between Peter and his brother.