This is the 17941st most frequent Polish word.
świadczą
"Świadczą" means "they testify" or "they provide evidence."
In this sentence, the word 'świadczą' means 'indicate' or 'show.' It connects the subject (data) with the assertion about economic trends.
Dane świadczą o wzroście gospodarki.
The data indicate economic growth.
Here, 'świadczą' means 'provide.' It describes the act of offering services.
Usługi, które świadczą, są bardzo profesjonalne.
The services they provide are very professional.
In this example, 'świadczą' translates to 'testify' or 'show,' implying that actions reveal or demonstrate character traits.