prop

In a sentence

• El supermercat és prop de casa.

  The supermarket is near the house.

  Here, 'prop' is used as an adverb to indicate proximity in a spatial context.

• Ens trobem prop de la plaça central.

  We meet near the central square.

  Here, 'prop' is again an adverb expressing physical closeness, focusing on specifying location for a meeting.

• Tinc les claus prop perquè no se m'oblidin.

  I keep the keys nearby so I don't forget them.

  In this sentence, 'prop' functions as an adverb to signify keeping something in a location that's easily accessible or close.