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nitrogen (N)

suffocation

typhoid

nitride

nitridization

gallium nitride

molecular nitrogen

silicon nitride

boron nitride

blocked

death from suffocation

nitrogen fixation (method)

dinitrogen monoxide

nitric monoxide

nitrogen fixation

suffocating

death by suffocation

nitrogen dioxide

nitrogen group (group 15 of the periodic table)

nitrogen narcosis

liquid nitrogen

nitrogen oxide

nitrogen oxide (esp. nitric oxide, but also nitrous oxide, nitrogen dioxide, dinitrogen pentoxide, etc.)

nitrogen metabolism

azotemia

denitrification

nitrogenous fertilizer

choking gas

nitrous oxide (N2O)

nitrogen cycle