an army

one shot, one charge, one explosion

general, universal

one night, one evening

number one, first, first place

one (small animal)

one vote, one ballot

item, article

one part, one portion, one section

oddity, eccentricity, peculiarity

one tenth, one hundredth, one percent

tiny amount of money, a penny, a cent

one week, a week

ten thousand, 10,000

last one, the final one

all day, throughout the day

I ate eggs with mushrooms, I consumed eggs along with mushrooms

16th of January, January 16

one person, alone

list, summary

number one, the best, most

the day before yesterday