1)

An idiom referring to a 'catch all' category created to group together maneuvers that have characteristics which prevent them from being classified in any other category, but also prevent them from being classified together.

2)

Designed for a specific purpose

Comments:

1)

This term is most often used in this context to refer to classifying basics into categories.

2)

One can said to have specialized skills.

Example(s):

1)

See Specialized Blocks, Specialized Stances, Specialized Strikies

2)

A practitioner primarily works at forms would be said to specialize in forms.