artifact vs unit

artifact

noun
  • Something viewed as a product of human agency or conception rather than an inherent element. 

  • An object, such as a tool, ornament, or weapon of archaeological or historical interest, especially such an object found at an archaeological excavation. 

  • Any object in the collection of a museum. May be used sensu stricto only for human-made objects, or may include ones that are not human-made. 

  • A perceptible distortion that appears in an audio or video file or a digital image as a result of applying a lossy compression or other inexact processing algorithm. 

  • An appearance or structure in protoplasm due to death, the method of preparation of specimens, or the use of reagents, and not present during life. 

  • An object made or shaped by some agent or intelligence, not necessarily of direct human origin. 

  • A finding or structure in an experiment or investigation that is not a true feature of the object under observation, but is a result of external action, the test arrangement, or an experimental error. 

  • An object made or shaped by human hand or labor. 

unit

noun
  • The identity element, neutral element. 

  • A physically large person. 

  • With regard to Reserve Components of the Armed Forces, denotes a Selected Reserve unit organized, equipped, and trained for mobilization to serve on active duty as a unit or to augment or be augmented by another unit. Headquarters and support functions without wartime missions are not considered units. 

  • The number one. 

  • a measure of housing equivalent to the living quarters of one household; an apartment where a group of apartments is contained in one or more multi-storied buildings or a group of dwellings is in one or more single storey buildings, usually arranged around a driveway. 

  • A standard measure of a quantity. 

  • A volume of rock or ice of identifiable origin and age range that is defined by the distinctive and dominant, easily mapped and recognizable petrographic, lithologic or paleontologic features (facies) that characterize it. 

  • A member of a military organization. 

  • A standard or basic quantity into which an item of supply is divided, issued, or detailed. In this meaning, also called unit of issue. 

  • A gold coin of the reign of James I, worth twenty shillings. 

  • In an adjunction, a natural transformation from the identity functor of the domain of the left adjoint functor to the composition of the right adjoint functor with the left adjoint functor. 

  • Any military element whose structure is prescribed by competent authority, such as a table of organization and equipment; specifically, part of an organization. 

  • Oneness, singularity, seen as a component of a whole number; a magnitude of one. 

  • One kilowatt-hour (as recorded on an electricity meter). 

  • any piece of equipment, such as an appliance, power tool, stereo system, computer, tractor, or machinery. 

  • An organization title of a subdivision of a group in a task force. 

  • An organized group comprising people and/or equipment. 

  • A unit of alcohol. 

  • An element having an inverse, an invertible element; an associate of the unity. 

  • An item which may be sold singly. 

  • A work unit. 

  • A penis, especially a large one. 

adj
  • Having a size or magnitude of one. 

  • For each unit. 

How often have the words artifact and unit occurred in a corpus of books? (source: Google Ngram Viewer )