Suffocation (also called ‘asphyxia’) is the condition in which normal breathing is impeded due to various direct or indirect factors that prevent the proper exchange of gas with the environment Asphyxia is generally accompanied by ‘dyspnoea’ i.e. the sensation of laboured breathing described by patients as ‘air hunger’. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.