This is the 375th most frequent Czech word.
sedm
The Czech word "sedm" means "seven" in English.
The word 'sedm' is used as a numeral to indicate the quantity of birds.
Včera jsem viděl sedm ptáků na stromě.
Yesterday, I saw seven birds on the tree.
Here, 'sedm' functions as an attribute describing the number of days.
Sedm dní v týdnu je tradiční koncept.
Seven days in a week is a traditional concept.
In this context, 'sedmého' is the ordinal form 'seventh', indicating the position of the day in a sequence.