praxis /prakˈsis/

1. The practice or practical side of an art or science, as distinct from its theoretical side
2. Customary or accepted practice
3. (an example or a collection of examples serving to provide) a practical exercise

• ballows
• ball park
• ballpark
• ball parks
• ballpeen hammer
• ballpeen hammers
• ball-player
• ball-players
• ballpoint
• ballpoint pen
• ballpoint pens
• ballpoints
• ball-proof
• ball rolling
• ballroom
• ballroom dancing
• ballrooms
• balls
• balls-aching
• ballsed-up
• ballsier
• ballsiest
• ballsiness
• ballsinesses
• balls-out