mond

As an abbreviation mond

is (physics).

As a noun sunday is

the seventh day of the week in systems using the standard, or the first day of the week in many religious traditions the sabbath for most christians; it follows saturday and precedes monday.

As an adverb sunday is

on sunday.

Mond is likely misspelled.

Mond has no English definition.

As a noun moon is

the largest satellite of Earth.

As a verb moon is

to display one's buttocks to, typically as a jest, insult, or protest.

As a proper noun Moon is

the Earth's moon; the sole natural satellite of the Earth, represented in astronomy and astrology by ☾.