"The liar is a person who uses the valid designations, the words, in order to make something which is unreal appear to be real." Nietzsche
Definitions form the foundation of lies, giving rise to deceit.
A definition provides a consensual meaning, while a lie deliberately distorts language to deceive for personal advantage, that is, to defraud for personal gain.
It’s not the "act of lying" that wounds; society and people can endure deception. Yet the "act of harm" that results (a breakdown of trust and disruption of social capital) leads communities to ostracize liars.
Intriguingly, professional liars dominate today’s landscape, forcing a tactical "loes-lose choice," where the allure of potential benefits allows a Faustian bargain; a begrudging, corrosive, temporary tolerance.