Sign of Neglect is a term used to describe the physical signs of a lack of care or attention. This can be seen in the presence of WEEDS, RUST, and DUST. WEEDS are plants that grow in an uncontrolled manner, often in places where they are not wanted. RUST is a reddish-brown coating that forms on metal surfaces when exposed to oxygen and moisture. DUST is a collection of small particles, such as dirt, that accumulates over time due to a lack of cleaning. All three of these elements are indicative of a lack of care and attention, and thus serve as a sign of neglect.