The difference between Impossible and Possible

When used as nouns, impossible means an impossibility, whereas possible means a possible one.

When used as adjectives, impossible means not possible, whereas possible means able but not certain to happen.

check bellow for the other definitions of Impossible and Possible

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."
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!"
Impossible as an adjective (math, dated):

imaginary

Examples:

"impossible quantities, or imaginary numbers"

Possible as an adjective (usually, not comparable):

Able but not certain to happen; neither inevitable nor impossible.

Examples:

"ant certain inevitable impossible"

"Rain tomorrow is possible, but I wouldn't bet on it."

"It's not just possible, it's probable."
Possible as an adjective (comparable):

Capable of being done or achieved; feasible.

Examples:

"ant impossible"

"It's possible for anyone to learn to pay the bagpipes."
Possible as an adjective:

Being considered, e.g. for a position.

Examples:

"Jones and Smith are both possible for the opening in sales."
Possible as an adjective:

Apparently valid, likely, plausible.

Examples:

"synonyms: likely plausible"

"ant implausible"

Possible as a noun:

A possible one.
Possible as a noun (colloquial, rare):

A possible choice, notably someone being considered for a position.

Examples:

"Jones is a possible for the new opening in sales."
Possible as a noun (rare):

A particular event that may happen.