This is the 4368th most frequent Polish word.
górskich
"Mountain" or "mountainous" (genitive or locative plural form).
In this sentence, 'górskich' is used as an adjective in the genitive plural form to describe the paths related to mountains.
Uwielbiam piesze wędrówki po ścieżkach górskich.
I love hiking on mountain paths.
Here, 'górskie' is an adjective used to describe the noun 'rośliny' in nominative plural, referring to flora characteristic to mountainous regions.
Rośliny górskie potrafią przetrwać w trudnych warunkach.
Mountain vegetation can survive in harsh conditions.
'Górskie' in this context is an adjective in the accusative plural form, denoting mountain-related shelters.