What is the classification of kudzu?

Vine is the classification of kudzu.

Specifically, the plant in question (Pueraria spp) belongs to a type of plant that is known for a trailing growth pattern. Kudzu grows by coiling, climbing, and trailing. The pattern is horizontal and vertical in direction and super-fast (at the rate of 1 foot [0.3048 meters] per day under optimal conditions) in speed.