flag: distinctive image used as a symbol, traditionally embodied as a piece of fabric

caravan: group of people traveling together, often on a trade expedition

residential building: building mainly used for residential purposes

Amazon rainforest: large rainforest in South America

group of humans: any set of human beings

Santo Antonio do Rio Madeira: municipality in the state of Rondonia

tram: public transport vehicle running on rails predominantly located on streets

railroad car: vehicle used for carrying cargo or passengers on rail transport system

railway: interconnected network of infrastructure and vehicles used for train rail transport