2nd declension nouns

aedificium, aedificii

building

ager, agri

field, land, territory

amicus, amici

friend

animus

spirit, soul, mind

annus, anni

year

argentum, argenti

silver, money

arma, armorum

arms, weapons

auxilium, auxilii

help

bellum, belli

war

beneficium, beneficii

kindness, service

bona, bonorum

goods, possessions

caelum, caeli

sky, heaven

campus, campi

plain, field

captivus, captivi

captive, prisoner

castra, castrorum

camp

cibus, cibi

food

consilium, consilii

council, plan

deus, dei

god

dolus, doli

trick, fraud

domina, dominae

mistress

dominus, domini

master

donum, doni

gift

equus, equi

horse

exemplum, exempli

example

exilium, exilii

exile

exitium, exitii

ruin, destruction

ferrum, ferri

iron, sword

filius, filii

son

forum, fori

forum

frumentum, frumenti

corn, grain

gaudium, gaudii

joy

gladius, gladii

sword

hortus, horti

garden

humus, humi

ground

imperium, imperii

command, power

incendium, incendii

fire

ingenium, ingenii

character, ability

inimicus, inimici

personal enemy

initium, initii

beginning

legatus, legati

(legionary) commander, ambassador

liber, libri

book

liberi, liberorum

children

libertus, liberti

freedman, ex slave

locus, loci

place, position

magister, magistri

teacher, master

maritus, mariti

husband

modus, modi

manner, way, kind

morbus, morbi

sickness, disease

murus, muri

wall

negotium, negotii

business

numerus, numeri

number

nuntius, nuntii

messenger

oculus, oculi

eye

odium, odii

hatred

officium, officii

duty, task, function

oppidum, oppidi

town

otium, otii

leisure, idleness

periculum, periculi

danger

pilum, pili

javelin

populus, populi

people

praemium, praemii

prize

praesidium, praesidii

protection

pretium, pretii

price

proelium, proelii

battle

puer, pueri

boy

regnum, regni

kingdom

responsum, responsi

answer

scutum, scuti

shield

servus, servi

slave

signum, signi

sign , signal

silentium, silentii

silence

socius, socii

ally, comrade

somnus, somni

sleep

sonus, soni

noise, sound

spatium, spatii

interval, space

spolium, spolii

booty

studium, studii

eagerness, study, devotion

tectum, tecti

roof

telum, teli

weapon

templum, templi

temple

tergum, tergi

back, rear

ventus, venti

wind

verbum, verbi

word

vir, viri

man, husband