fric·tion
/ˈfrikSHən/
noun
the resistance that one surface or object encounters when moving over another.
"a lubrication system that reduces friction"
synonyms: abrasion, abrading, rubbing, chafing, grating, rasping, scraping, excoriation, grinding, gnawing, eating away, wearing away/down, resistance, drag, adhesion, traction, grip, purchase, attrition, fretting, detrition
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What is friction in simple definition?
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Friction
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
Types of friction include dry, fluid, lubricated, skin, and internal. Wikipedia
Symbol: letter μ
the force that makes it difficult for one object to slide along the surface of another or to move through a liquid or gas:.
Yes. Friction is a 'catch all' phrase for any force opposing the relative motion of objects in contact. Examples include the 'friction' supplied by a parachute ...