This is the 389th most frequent French word.
côtés
"Sides."
Here, 'côtés' refers to the 'sides' of something, specifically the river in this sentence.
Je vais explorer les deux côtés de la rivière.
I will explore both sides of the river.
In this context, 'côtés' metaphorically represents the different 'aspects' or 'perspectives' of an argument.
Elle a examiné les différents côtés de l'argument.
She examined the different sides of the argument.
Here, 'côtés' refers to spatially opposite positions, relating to each side of the door.