This is the 16054th most frequent Polish word.
tysi臋cy
"Tysięcy" means "thousands" in English.
'Tysięcy' is used here as part of a numerical noun phrase indicating a quantity (thirty thousand).
W Polsce mieszka ponad trzydzieści tysięcy osób.
In Poland, over thirty thousand people live.
'Tysięcy' in this example refers to an indefinite large amount of people, indicative of 'thousands'.
Wieczorem na rynku zgromadziły się tysięcy ludzi.
In the evening, thousands of people gathered at the market.
'Tysięcy' is describing a multiplicity of origins in the context of data sources quantified as thousands.