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Enzyme
Enzymes (/ˈ ɛ n z aɪ m z / ) are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme convert
Red blood cell
Red blood cells (RBCs), referred to as erythrocytes (from Ancient Greek erythros 'red' and kytos 'hollow vessel', with -cyte translated as 'cell' in modern usage) in academia and medical publishing
Non-metropolitan county
A non-metropolitan county, or colloquially, shire county, is a subdivision of England used for local government.Non-metropolitan countyAlso known as:Shire countyNon-metropolitan countiesCategoryCou
Sociological theory
A sociological theory is a supposition that intends to consider, analyze, and/or explain objects of social reality from a sociological perspective,: 14 drawing connections between individual concep
Proprietary software
Proprietary software is software that grants its creator, publisher, or other rightsholder or rightsholder partner a legal monopoly by modern copyright and intellectual property law to exclude the 
Machinery
A machine is a physical system that uses power to apply forces and control movement to perform an action. The term is commonly applied to artificial devices, such as those employing engines or moto
Paris
Paris (French pronunciation: [paʁi] ) is the capital and largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than 105 km2 (41 sq mi), Pari
Executive branch of the U.S. government
It has been suggested that Criticism of the United States government be merged into this article. (Discuss)Proposed since November 2024.The federal government of the United States (U.S. federal gov
North Frisia
North Frisia (/ˈ f r iː ʒ ə / ; German: Nordfriesland; North Frisian: Nordfraschlönj; Danish: Nordfrisland, Low German: Noordfreesland) is the northernmost portion of Frisia, located in Schleswig-H
Two-empire system
The two-empire system (two-superkingdom system) was the top-level biological classification system in general use from the early 20th century until the establishment of the three-domain system (whi
