Latin B1: Manus & res: the fourth and fifth declensions · Grammar

Two small declensions hold some very common words. The fourth: manus, manus (hand, feminine), exercitus (army), senatus (senate), domus (house); object -um, ablative -u, plural -us. The fifth: res, rei (thing, matter), dies (day), spes (hope), fides (trust); object -em, ablative -e, plural -es. res has many meanings: res publica (the state), res gestae (deeds).

• manus — hand
• exercitus — army
• senatus — senate
• domus — house, home
• res — thing, matter
• dies — day
• spes — hope
• fides — trust, faith

• Manus manum lavat. — One hand washes the other.
• Dum spiro, spero. — While I breathe, I hope.
• Exercitus in castris manet. — The army stays in the camp.
• Senatus populusque Romanus. — The Senate and the Roman people.