Medical conditions known to cause swelling that affects both legs equally include heart disease, kidney disease, liver disease, and chronic sleep apnea, and complications of diabetes. Premenstrual syndrome (PMS) is also a well-known cause of swelling in the ankles and feet.
Definition of serendipity for English Language Learners. : luck that takes the form of finding valuable or pleasant things that are not looked for.
Pointillism is a close relative of stippling, in which the artist, using brushes and different colors of paints, creates an entire composition out of dots. As a noun in this instance, stippling is what one sees, and is the end result of someone using stippling as a verb.