This is the 725th most frequent Czech word.
ze
"Ze" in Czech means "that" (used as a conjunction).
Dependent conjunction introducing a subordinate clause.
Myslím, že je chytrá.
I think that she is smart.
Dependent conjunction linking two clauses to express a reason.
Jsem šťastný, že jsi přišel.
I am happy that you came.
Preposition meaning 'from' in conjunction with summarizing information.