Material culture refers to the physical objects and architecture of a society that manifest aspects of culture. It includes any object that humans use to survive, define social relationships, represent facets of identity, or benefit peoples state of mind, social, or economic standing. Material culture is contrasted with symbolic culture or non-material culture, which includes non-material symbols, beliefs, and social constructs. However, some scholars include in material culture other intangible phenomena like sound, smell, and events, while some even consider it to include language and media. The scholarly analysis of material culture, which can include both human-made and natural or altered objects, is called material culture studies. It is an interdisciplinary field and methodology that tells of the relationships between people and their things: the making, history, preservation, and interpretation of objects. Examples of material culture include tools, weapons, utensils, machines, ornaments, art, buildings, monuments, written records, religious images, clothing, and any other ponderable objects produced or used by humans.