Articulation

Noun

1. A joint or the collection of joints at which something is articulated, or hinged, for bending.

   "The articulation allowed the robot to move around corners."

2. Such a joint in an animalian body, as for example between bones or between exoskeleton segments.
3. A manner or method by which elements of a system are connected.
4. The quality, clarity, or sharpness of speech; the movement within the mouth that allows for those things.

   "His volume is reasonable, but his articulation could use work."

5. The mechanism by which a sound is formed in the vocal tract.

   "manner of articulation"