This is the 506th most frequent Czech word.
rodiny
"Rodiny" in Czech means "families" in English.
In this sentence, 'rodiny' is plural nominative, the subject of the sentence, meaning 'families'.
Rodiny se sešly na společné oslavě.
The families gathered for a shared celebration.
Here, 'rodiny' is in singular genitive form and refers to 'family'.
Chtěl bych znát vaše názory ohledně vaší rodiny.
I would like to know your opinions regarding your family.
In this sentence, 'rodinám' is in plural dative form, indicating the ones to whom something is being provided.