This is the 7583rd most frequent Spanish word.
juntas
"Juntas" means "together" (feminine plural) or "meetings/assemblies" depending on context.
The word 'juntas' is used here as a feminine plural adjective indicating the action of working together, which is performed by the students, who are female.
Las estudiantes trabajan juntas en el proyecto.
The students work together on the project.
Here, 'juntas' is used as an adverb detailing the action of assembling the pieces in a way that they are placed together.
Ayer instalamos las piezas juntas para completar el modelo.
Yesterday we assembled the pieces together to complete the model.
In this sentence, 'juntas' is an adjective describing the hinges, referring to their proximity or closeness.