RSA

1. Republic of South Africa
2. Returned Services Association (NZ)
3. Royal Scottish Academy or Academician
4. Royal Society of Arts (officially the Royal Society for encouragment of Arts, Manufactures and Commerce)

• night-night
• night nurse
• night nurses
• night out
• night outs
• night owl
• night owls
• night-palsy
• nightpiece
• nightpieces
• night-porter
• night-porters
• night-rail
• night-rails
• night-raven
• night-ravens
• night-rest
• night-rests
• nightrider
• nightriders
• night-robe
• night-robes
• night-rule
• night-rules
• nights