'Companions' in the Bible

"But to what shall I compare this generation? It is like children sitting in the marketplaces, who call to their companions

The whole city was filled with confusion, and they rushed with one accord into the theater, having seized Gaius and Aristarchus, men of Macedonia, Paul's companions in travel.

On the next day, we, who were Paul's companions, departed, and came to Caesarea. We entered into the house of Philip the evangelist, who was one of the seven, and stayed with him.