This is the 6134th most frequent Polish word.
argentyńczyków
"Argentyńczyków" means "Argentinians" (genitive plural form) in English.
Here, 'Argentyńczyków' is used as the accusative plural form of the noun to specify the direct object in the sentence.
Widziałem dziś na ulicy grupę Argentyńczyków.
I saw a group of Argentinians on the street today.
In this sentence, 'Argentyńczyków' should actually be 'Argentyńczykami' as it should be in the instrumental plural form due to the preposition 'z'. It's an example of common mistakes made during learning.
Wczoraj rozmawiałem z kilkoma Argentyńczyków o ich kraju.
Yesterday, I talked with some Argentinians about their country.
Here, 'Argentyńczyków' is correctly used as the genitive plural form of the noun to denote negation within the verb context.