the ninth day of the month / nine days

the seventh day of the month / seven days

ditto, what someone said

zero on a test etc., no points earned / freezing point / zero (value of a function’s independent variables when the value of the function is zero)

to turn on, to switch on

coarse / rough / crude

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