sickness

sickness /ˈsɪknəs/ noun
plural sicknesses
sickness
/ˈsɪknəs/
noun
plural sicknesses
Britannica Dictionary definition of SICKNESS
1 
[noncount] : unhealthy condition of body or mind : the state of being sick
2 
[count] : a specific type of disease or illness — see also radiation sickness, sleeping sickness
3 
[noncount] : the feeling you have in your stomach when you think you are going to vomit
— see also morning sickness, motion sickness, travel sickness