Hostility is seen as form of emotionally aggressive behavior. In everyday speech it is more commonly used as a synonym for anger and aggression.
Tensions between the two differences of hostility and hospitality has increased in the 21st century.[1] Some physicals forms of hostility can be grinding or gnashing of teeth, the clenching and shaking of fists, and frowning.[2]
References
↑K Thorpe ed., Hospitality and Hostility in the Multilingual Global Village (2014) p. 2-7
↑D Maclean, The Triune Brain in Evolution (London 1990) p. 460