Close connection
(Other definitions for kinship that I've seen before include "A sharing of characteristics" , "Blood tie" , "Affinity" , "Blood relationship" , "Having relations with" .)
'close connection' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for bond that I've seen before include "Link, connection" , "Affinity" , "Fictional 25, associate of 18 20" , "Fictional agent; join" , "Affiliation" .)