disease
The Italian word for disease is 'malattia'. It is a noun and is used to describe any condition that impairs the normal functioning of an organism, especially a human being. For example, 'Ho una malattia' means 'I have a disease'.
The disease spread quickly.
This sentence is in the past tense, using 'si è diffusa', which is the third person singular of the verb 'diffondere' (to spread) in its reflexive form. Here, 'malattia' is the subject of the sentence.
My disease is serious.
This sentence is in the present tense, using 'è', which is the third person singular of the verb 'essere' (to be). Here, 'malattia' is used with the possessive 'mia' to mean 'my disease'.
Pain is a disease.
This sentence is in the present tense using 'è', which is the third person singular of the verb 'essere' (to be). In this context, 'malattia' is used metaphorically to imply that pain can be as debilitating as a disease.