The difference between Absurd and Rational
When used as nouns, absurd means an absurdity, whereas rational means a rational number: a number that can be expressed as the quotient of two integers.
When used as adjectives, absurd means contrary to reason or propriety, whereas rational means capable of reasoning.
check bellow for the other definitions of Absurd and Rational
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Absurd as an adjective:
Contrary to reason or propriety; obviously and flatly opposed to manifest truth; inconsistent with the plain dictates of common sense; logically contradictory; nonsensical; ridiculous; silly.
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Absurd as an adjective (obsolete):
Inharmonious; dissonant.
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Absurd as an adjective:
Having no rational or orderly relationship to people's lives; meaningless; lacking order or value.
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Absurd as an adjective:
Dealing with absurdism.
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Absurd as a noun (obsolete):
An absurdity.
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Absurd as a noun (philosophy, often preceded by {{m, the):
}} The opposition between the human search for meaning in life and the inability to find any; the state or condition in which man exists in an irrational universe and his life has no meaning outside of his existence. }}
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Rational as an adjective:
Capable of reasoning.
Examples:
"Man is a rational creature."
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Rational as an adjective:
Logically sound; not contradictory or otherwise absurd.
Examples:
"His statements were quite rational."
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Rational as an adjective (of a person or personal characteristics):
Healthy or balanced intellectually; exhibiting reasonableness.
Examples:
"'rational conduct"
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Rational as an adjective (mathematics, arithmetic, number theory, not comparable):
Of a number, capable of being expressed as the ratio of two integers.
Examples:
"¾ is a rational number, but √<span style="text-decoration:overline">2</span> is an irrational number."
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Rational as an adjective (mathematics, arithmetic, not comparable):
Of an algebraic expression, capable of being expressed as the ratio of two polynomials.
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Rational as an adjective (chemistry):
Expressing the type, structure, relations, and reactions of a compound; graphic; said of formulae.
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Rational as an adjective (physics):
Expressing a physical object.
Examples:
"A rational table is physical, a written table is neither."
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Rational as a noun (mathematics):
A rational number: a number that can be expressed as the quotient of two integers.
Examples:
"The quotient of two rationals is again a rational."
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Rational as a noun (historical):
The breastplate worn by Israelite high priests.
Examples:
"'1609, Douay-Rheims Bible, Exodus 28:15"
"And thou shalt make the rational of judgment with embroidered work of divers colours, according to the workmanship of the ephod, of gold, violet, and purple, and scarlet twice dyed, and fine twisted linen."