This is the 2785th most frequent Portuguese word.
trocar
To exchange, to trade, to switch, or to replace.
In this context, 'trocar' is used to mean 'change' or 'replace' something specific.
Eu preciso trocar o pneu do carro.
I need to change the car tire.
Here, 'trocar' implies 'exchange' or 'share' ideas between individuals.
Podemos trocar ideias sobre o projeto.
We can exchange ideas about the project.
In this sentence, 'trocar' is used to denote 'swap' or 'exchange' one item for another.