Cousinship

[PussyCat]

The relationship of cousins; state of being cousins;
cousinhood.

[Jason Yan]

Considered to be a holy term to reveal the truth from [your cousin].

[Over time] the use of [cousinship] has developed into other ships, such as siblingship and friendship to name a few.

[Agnes]

term used typically by [inebriated] individuals referring to

[the relationship]/[special bond] with ones cousin.