The term 'Silent Type' can be described by two crossword solutions: MIME and CLAM. A MIME is a performer who uses physical gestures and body movements to convey emotions and stories without speaking. This type of performance art originated in Ancient Greece and has been popularized in modern times by Marcel Marceau. A CLAM is a type of bivalve mollusk that lives in saltwater and freshwater habitats. Clams are known for their ability to remain silent and still, often burying themselves in the sand or mud.