Context: Surfactants are compounds that lower the surface tension (or interfacial tension) between two liquids or between a liquid and a solid. Surfactants may act as detergents, wetting agents, emulsifiers, foaming agents, and dispersants., Housekeeping refers to the management of duties and chores involved in the running of a household, such as cleaning, cooking, home maintenance, shopping, laundry and bill pay. These tasks may be performed by any of the household members, or by other persons hired to perform these tasks. The term is also used to refer to the money allocated for such use. By extension, an office or organization, as well as the maintenance of computer storage systems., Non-food items ( NFIs ) are items other than food . The term is especially used in humanitarian contexts , when providing NFIs to those affected by natural disasters or war may be a life - saving priority . Typically , they include essential household items such as blankets , plastic sheets , buckets and other containers for water , cooking items and soap ., Washing is a method of cleaning, usually with water and often some kind of soap or detergent. Washing both body and clothing is an essential part of good hygiene and health., Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms. Its chemical formula is HO, meaning that its molecule contains one oxygen and two hydrogen atoms, that are connected by covalent bonds. Water strictly refers to the liquid state of that substance, that prevails at standard ambient temperature and pressure; but it often refers also to its solid state (ice) or its gaseous state (steam or water vapor). It also occurs in nature as snow, glaciers, ice packs and icebergs, clouds, fog, dew, aquifers, and atmospheric humidity., In chemistry, particularly in biochemistry, a fatty acid is a carboxylic acid with a long aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, from 4 to 28. Fatty acids are usually derived from triglycerides or phospholipids. Fatty acids are important sources of fuel because, when metabolized, they yield large quantities of ATP. Many cell types can use either glucose or fatty acids for this purpose. Long-chain fatty acids cannot cross the bloodbrain barrier (BBB) and so cannot be used as fuel by the cells of the central nervous system; however, free short-chain fatty acids and medium-chain fatty acids can cross the BBB, in addition to glucose and ketone bodies., A lubricant is a substance introduced to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. It may also have the function of transmitting forces, transporting foreign particles, or heating or cooling the surfaces. The property of reducing friction is known as lubricity., In chemistry, a soap is a salt of a fatty acid. Household uses for soaps include washing, bathing, and other types of housekeeping, where soaps act as surfactants, emulsifying oils to enable them to be carried away by water. In industry they are also used in textile spinning and are important components of some lubricants., Bathing is the washing of the body with a fluid, usually water or an aqueous solution, or the immersion of the body in water. It may be practiced for personal hygiene, religious ritual or therapeutic purposes. By analogy, especially as a recreational activity, the term is also applied to sun bathing and sea bathing., Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter. Chemistry includes topics such as the properties of individual atoms, how atoms form chemical bonds to create chemical compounds, the interactions of substances through intermolecular forces that give matter its general properties, and the interactions between substances through chemical reactions to form different substances., Subject: non-food item, Relation: subclass_of, Options: (A) activity (B) analogy (C) bathing (D) biochemistry (E) brain (F) branch (G) carbon (H) carboxylic acid (I) cell (J) chain (K) change (L) chemical formula (M) chemical substance (N) chemistry (O) clothing (P) composition (Q) computer (R) constituent (S) fatty acid (T) fluid (U) formula (V) function (W) general (X) good (Y) heat (Z) hydrogen ([) industry (\) liquid (]) lubricant (^) management (_) method (`) molecule (a) money (b) organization (c) religious (d) ritual (e) shopping (f) snow (g) soap (h) state (i) storage (j) structure (k) surface (l) term (m) water
Output: good