in the last picture the people look like they have a serios conversation. They're dressed like they work in a office or something like that. They're in a plane. in contrast to the fist one, They're in a group and comunicate but in the first picture the man sits alone and read the information. The people in the last picture comunicate the informations. The man in the first image wait for a tram but in the last image the people are in a tram.