Cancer itself is not communicable. I spent lots of time with both of my grandfathers when they were infected with the horrible disease. Do not worry, you cannot just "catch" cancer by being around someone living with the disease.
A non-communicable disease is a type of disease that cannot be transmitted from person to person. Examples of non-communicable diseases include arthritis, cerebral palsy, cancer, diabetes, osteoporosis, heart disease and Alzheimer's disease.