one person / singleness, singularity / one's own efforts or strengths / an unmarried person, single

one day

each person

one person

(rare) the first day of the month

sun / daytime, daylight / day

one day, 24 hours / the daytime, the period from dawn until dusk / (figuratively) a short period of time / one day, someday, an unspecified day / the first day of the month

a surname

all day

the first day of the month (solar or lunar calendar)