kinship
n. 亲属关系，家属关系；亲切感，亲近感；共同特征，共同起源
例句
The ties of kinship may have helped the young man find his way in life.
亲情可能帮这个年轻人找到了生活的方向。
《柯林斯英汉双解大词典》
Kinship is unilateral while friendship and love are bilateral.
亲情是单方面的，而友情和爱情是双方面的。
These same sensations also cause mammals to develop various types of social relations and kinship networks.
这些相同的感觉也使哺乳动物发展出多种社会关系和亲属网络。
