Term: small-particle pollution: air pollution caused by fine particles of soot (as from power plants or diesel engines)
Broader: air pollution: pollution of the atmosphere | Unrelated: black spruce: small spruce of boggy areas of northeastern North America having spreading branches with dense foliage; inferior wood
Broader: air pollution: pollution of the atmosphere | Unrelated: lighthouse keeper: the keeper of a lighthouse
Broader: air pollution: pollution of the atmosphere | Unrelated: tail feather: feather growing from the tail (uropygium) of a bird
Broader: air pollution: pollution of the atmosphere | Unrelated: vestibular vein: veins that drain the saccule and utricle
Broader: air pollution: pollution of the atmosphere | Unrelated: tree surgeon: a specialist in treating damaged trees
Broader: air pollution: pollution of the atmosphere | Unrelated: folk singer: a singer of folk songs
Broader: air pollution: pollution of the atmosphere | Unrelated: fireman's carry: the act of carrying a person over your shoulder
Broader: air pollution: pollution of the atmosphere | Unrelated: cisterna: a sac or cavity containing fluid especially lymph or cerebrospinal fluid
Broader: air pollution: pollution of the atmosphere | Unrelated: tomato: mildly acid red or yellow pulpy fruit eaten as a vegetable
Broader: air pollution: pollution of the atmosphere | Unrelated: divertimento: a musical composition in several movements; has no fixed form