乳, 父: a surname / 父子: a place name

日日: day by day

日日: every day, daily

(onomatopoeia, slang) sexy

Short for 日曜日 (nichiyōbi): Sunday

ordinal day of a month / number of days

sun / day

the sun / sunlight, sunshine / daytime, daylight / a day / time and date / a daily (something done everyday) / the weather / a (usually unfortunate) case, event, situation

daytimes / number of days

Alternative form of 日除け