Rigour
Part of speech: noun
Definition: a harsh or severe experience. a trembling or shivering response. character of being unyielding or inflexible. shrewd questioning higher level of difficulty . An abbreviated form of rigour mortis.
Asperity
Part of speech: noun
Definition: Roughness as of stone or weather.Something that is harsh and hard to endure.Harshness, as of temper.A part of a geological fault line that does not move. Earthquakes begin and end at asperities.