Question

What is lubricant ?
A lubricant is a substance , usually organic introduced 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
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Answer 1

Explanation:

a substance, for example oil, that makes the parts of a machine work easily and smoothly

Answer 2

Answer:

What is lubricant ?

A lubricant is a substance , usually organic introduced 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

In easy language

Any substances which reduces friction is called lubricant .

ex oil , roller wheel