Noun severity has 3 senses
  1. badness, severity - used of the degree of something undesirable e.g. pain or weather
    --1 is a kind of intensity, intensiveness
    --1 has particulars: seriousness, distressfulness
  2. asperity, grimness, hardship, rigor, rigour, severity, rigorousness - something hard to endure; "the asperity of northern winters"
    --2 is a kind of difficulty, difficultness
  3. severity, harshness, rigor, rigour, inclemency, hardness, stiffness - excessive sternness; "severity of character"; "the harshness of his punishment was inhuman"; "the rigors of boot camp"
    --3 is a kind of sternness, strictness