The difference between Impossible and Incidental
When used as nouns, impossible means an impossibility, whereas incidental means minor items, not further defined. incidental expense.
When used as adjectives, impossible means not possible, whereas incidental means loosely associated.
check bellow for the other definitions of Impossible and Incidental
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Impossible as an adjective:
Not possible; not able to be done or happen.
Examples:
"It is difficult, if not impossible, to memorize 20,000 consecutive numbers."
"Sarah thinks that nothing is impossible because things can always somehow happen."
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Impossible as an adjective (colloquial, of a person):
Very difficult to deal with.
Examples:
"You never listen to a word I say – you're impossible!"
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Impossible as an adjective (math, dated):
imaginary
Examples:
"impossible quantities, or imaginary numbers"
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Impossible as a noun (obsolete):
an impossibility
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Incidental as an adjective:
Loosely associated; existing as a byproduct, tangent, or accident; being a likely consequence.
Examples:
"That character, though colorful, is incidental to the overall plot."
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Incidental as an adjective:
Occurring by chance
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Incidental as an adjective (physics, of radiation):
Entering or approaching, prior to reflection (more frequently incident).
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Incidental as a noun:
Minor items, not further defined. Incidental expense.
Examples:
"She's costing us a lot in incidentals."
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Incidental as a noun:
Something that is incidental.