This is the 803rd most frequent Czech word.
andrej
"Andrej" is a Czech given name, equivalent to "Andrew" in English.
Here, 'Andrej' is a proper noun used as the name of a person.
Andrej vydal knihu o přírodě.
Andrej published a book about nature.
In this sentence, 'Andrej' is used in its genitive form 'Andreje' to express a relationship or association.
Vždy, když slyším Andreje, myslím na naše výlety.
Whenever I hear about Andrej, I think of our trips.
Here, 'Andrej' serves as a proper noun acting as the subject executing an action in the past tense.