This is the 518th most frequent Catalan word.
aquí
"Here."
Here, 'aquí' is used as an imperative command, directing someone to come to the speaker's current location.
Vine aquí quan puguis.
Come here when you can.
In this context, 'aquí' takes a figurative meaning, referring to the present time and situation as part of an idiomatic phrase.
L'aquí i ara és molt important per viure plenament.
The here and now is very important to live fully.
In this sentence, 'aquí' is used to indicate the specific location of the subject's book, emphasizing proximity to the speaker.