This is the 533rd most frequent Czech word.
of
The Czech word "of" does not exist; it may be a misunderstanding or typo.
Here, 'o' functions as a preposition meaning 'about', introducing a subject or topic of the noun it accompanies.
Mám knihu o psech.
I have a book about dogs.
In this sentence, 'o' serves to indicate the object of a request or action, precisely forming the phrase 'o pomoc' which means 'for help'.
Rozhodl se o pomoc požádat.
He decided to ask for help.
Here, 'o' indicates the subject of discussion or knowledge, linking the speaker's awareness to the topic discussed.