The best definition I have found for what swearing is:
“Why do people swear? Why does using a swear word make us feel better? How do we choose which word we use?Luckily for you, the Association of Psychological Science’s Perspectives on Psychological Science just published an article that answers these important scientific questions in an article by Timothy Jay (2009). If swear words hurt your eyes, you may want to stop reading now.
Jay notes that swear words (or taboo words, as he calls them) can include sexual references (fuck), those that are profane or blasphemous (goddamn), scatological or disgusting objects (shit), animal names (pig, ass), ethnic/racial/gender slurs (fag), ancestral allusions (bastard), substandard vulgar terms and offensive slang. Taboo words can be mildly offensive to extremely offensive, and people will often use a more mild euphemism to replace a swear word when in mixed (or unknown) company.” – PsychCentral.com
More to come…