equan
A trait shared by two or more objects having the same quantity, but not necessarily sharing the same other qualities.

Quality -> Equal -> Equality
Quantity -> Equan -> Equantity

Two cereal boxes of different brands may not share the same box artwork, cereal flavor or type, but they have the same amount of cereal in them - Therefore, they are equan.
1 - Dude, those two vending machines are equan.

2 - What?