The term 'fog relatives' refers to two related meteorological phenomena: HAZES and mists. Haze is a type of air pollution that is caused by tiny particles suspended in the air, which can reduce visibility and cause a hazy appearance. Mist is a type of fog that is composed of tiny droplets of water suspended in the air, which can also reduce visibility. Both HAZES and mists are related to fog, as they are both forms of reduced visibility due to suspended particles or droplets in the air.