This is the 349th most frequent Catalan word.
mostra
"Mostra" in Catalan means "sample" or "exhibit."
Here, 'mostra' means 'exhibition' or 'display', referring to an event where items are shown publicly.
La mostra del quadre serà aquesta tarda.
The exhibition of the painting will be this afternoon.
In this sentence, 'mostra' signifies 'sample,' 'indication,' or 'demonstration,' indicating something that represents or evidences something else.
Aquest resultat és una mostra del teu esforç.
This result is a demonstration of your effort.
Here, 'mostra' is used to mean 'sample,' a small part of something intended to represent the whole.