This is the 864th most frequent Hungarian word.
hétfő
"Monday"
Here, 'hétfő' refers to a day of the week, represented as a noun.
A hétfő a hét első napja.
Monday is the first day of the week.
Here, 'hétfő' is used in its locative case 'hétfőn', indicating action occurring on Monday.
Hétfőn találkozunk a kávézóban.
We will meet at the café on Monday.
Here, 'hétfő' describes an attribute (Monday) associated with the subject 'morning sunlight'.