The ability, coming from one's knowledge and practice

Something that is advantageous or good

Suitable for a particular purpose, person, occasion, etc.

To found, build, or bring into being on a firm basis

Concerned with, or based on what is real or practical

To use, participate in, enjoy, receive, etc., jointly

Of different kinds, as two or more things

Diligent investigation into a subject

A customary or regular course of procedure

Of much or great significance or consequence