I believe they mean that the random variables have a common support. For example, if X ~ Unif[0,2] and Y ~ Unif[1,3], then their respective PDF's overlap in the interval [1,2], meaning the only interval where both X and Y can have common values is [1,2]. To illustrate, below is a representation of the supports of X and Y, below which is a representation of the real line.
1 Thyroid cancer is a malignant tumor of the thyroid gland. 2  Symptoms of thyroid cancer include swelling in the neck (goiter), neck pain, hoarseness, swallowing and breathing problem, swollen lymph gland in the neck.
Thyroid nodules usually don't cause symptoms, but can cause a visible lump, neck pain, hoarseness, and more. A skin abscess, or boil, is a swollen, painful, red and warm lump of skin that may rupture and drain pus. Hypothyroidism your body functions slow down, making you gain weight and feel tired all the time.