This is the 9952nd most frequent Russian word.
американским
"American" (adjective, instrumental case).
The word 'американским' is used here as an adjective in the instrumental case, describing 'кино' (cinema) in terms of origin or association.
Я всегда был впечатлён американским кино.
I have always been impressed by American cinema.
In this sentence, 'американским' serves as an adjective in the instrumental case, modifying 'журналистом' (journalist) to specify nationality.
Она разговаривает с американским журналистом.
She is speaking with an American journalist.
Here, 'американским' is used as an adjective in the instrumental case that describes 'другом' (friend), indicating their origin.