This is the 126th most frequent Czech word.
říká
"Říká" means "says" in English.
Here, 'říká' is used to mean 'says', representing the act of conveying speech or opinion.
Petr říká, že přijde pozdě.
Peter says that he will be late.
In this sentence, 'říká' metaphorically conveys information provided by a source, which is the book.
Kniha říká, že bychom měli být opatrní.
The book says that we should be careful.
Here, 'říká' illustrates the way different people express or state something, emphasizing variation in responses.