Logical
Part of speech: adjective
Definition: In agreement with the principles of logic. Reasonable. Of or pertaining to logic.
Example sentence: When the music industry started collapsing, the logical people understood that the only place to go for shelter was the underground. If the world on the surface is burning up, and you know people that have bunkers, go to the bunkers.
Rational
Part of speech: adjective
Definition: Reasonable; not absurd, foolish, emotional, or fanciful.Capable of reasoning.Of a number, capable of being expressed as the ratio of two integers.Of an algebraic expression, capable of being expressed as the ratio of two polynomials.
Part of speech: noun
Definition: A rational number: a number that can be expressed as the quotient of two integers.
Example sentence: The relationship between parents and children, but especially between mothers and daughters, is tremendously powerful, scarcely to be comprehended in any rational way.