As nouns the difference between cats and tuberculosis
is that
cats is plural of lang=en while
tuberculosis is an infectious disease of humans and animals caused by a species of mycobacterium, usually species: Mycobacterium tuberculosis, mainly infecting the lungs where it causes tubercles characterized by the expectoration of mucus and sputum, fever, weight loss, and chest pain, and transmitted through inhalation or ingestion of bacteria.
As a verb cats
is third-person singular of cat.