res rei f.
thing, matter, affair, business
dies diei m.
day
facies faciei f.
face
fides fidei f.
faith, trust
spes spei f.
hope
Carpe diem.
Seize the day.
res, -ei 5th Declension Model Noun
res rei rei rem re res rerum rebus res rebus
-es, -ei 5th Declension Case Endings
es ei ei em e es erum ebus es ebus