The boundary between 2 plates moving together is calle _______.

http://en.wikipedia.org/wiki/Plate_tectonics#Types_of_plate_boundaries

Types of plate boundaries

Three types of plate boundary.

Main article: List of tectonic plate interactions
Basically, three types of plate boundaries exist,[10] with a fourth, mixed type, characterized by the way the plates move relative to each other. They are associated with different types of surface phenomena. The different types of plate boundaries are:[11][12]

Transform boundaries (Conservative) occur where plates slide or, perhaps more accurately, grind past each other along transform faults. The relative motion of the two plates is either sinistral (left side toward the observer) or dextral (right side toward the observer). The San Andreas Fault in California is an example of a transform boundary exhibiting dextral motion.

Divergent boundaries (Constructive) occur where two plates slide apart from each other. Mid-ocean ridges (e.g., Mid-Atlantic Ridge) and active zones of rifting (such as Africa's East African Rift) are both examples of divergent boundaries.

Convergent boundaries (Destructive) (or active margins) occur where two plates slide towards each other commonly forming either a subduction zone (if one plate moves underneath the other) or a continental collision (if the two plates contain continental crust). Deep marine trenches are typically associated with subduction zones, and the basins that develop along the active boundary are often called "foreland basins". The subducting slab contains many hydrous minerals, which release their water on heating; this water then causes the mantle to melt, producing volcanism. Examples of this are the Andes mountain range in South America and the Japanese island arc.

Plate boundary zones occur where the effects of the interactions are unclear and the boundaries, usually occurring along a broad belt, are not well defined, and may show various types of movements in different episodes.

The boundary between two plates moving together is called a convergent boundary. To find this answer, you can start by understanding the basic concept of plate tectonics and the different types of plate boundaries.

Plate tectonics is the scientific theory that explains the large-scale motions, interactions, and dynamics of the Earth's lithosphere (the rigid outer layer of the Earth that consists of the crust and uppermost part of the mantle). According to this theory, the Earth's lithosphere is divided into several large and small plates that float on the semi-fluid asthenosphere beneath them.

There are three primary types of plate boundaries: divergent boundaries, where plates move apart from each other; convergent boundaries, where plates move toward each other; and transform boundaries, where plates slide past each other horizontally.

The question specifically asks about the boundary between two plates moving together, which falls under the category of convergent boundaries. These boundaries form when two lithospheric plates collide, leading to the deformation and destruction of the lithosphere.

One classic example of a convergent boundary is the collision between the Indo-Australian Plate and the Eurasian Plate, which forms the Himalayas. Another example is the convergence between the Nazca Plate and the South American Plate, leading to the formation of the Andes Mountains.

In summary, the boundary between two plates moving together is called a convergent boundary. Understanding the basics of plate tectonics and the different types of plate boundaries can help you find this answer.