This is the 6668th most frequent Catalan word.
sabies
"Sabies" means "you knew" (second person singular, past imperfect of "saber").
In this sentence, "sabies" is the past imperfect form of the verb "saber" (to know), used here to indicate a past state of knowledge or awareness.
Sabies que avui plourà?
Did you know that it will rain today?
"Sabies" is again the imperfect form of "saber," expressing an ongoing ability or knowledge in the past.
Tu sempre sabies com fer-me somriure.
You always knew how to make me smile.
Here "sabies" reflects a conditional past known fact or state, leading to a subsequent question.