illness

♦ ill|ness /'ɪlnəs/ (illnesses)
1 [N-UNCOUNT]
Illness is the fact or experience of being ill.
If your child shows any signs of illness, take her to the doctor...
Mental illness is still a taboo subject.
2 [N-COUNT]
An illness is a particular disease such as measles or pneumonia.
She returned to her family home to recover from an illness.