The difference between Brief and Prolonged

When used as adjectives, brief means of short duration, whereas prolonged means lengthy in duration.

Brief is also noun with the meaning: a writ summoning one to answer to any action.

Brief is also adverb with the meaning: briefly.

Brief is also verb with the meaning: to summarize a recent development to some person with decision-making power.

check bellow for the other definitions of Brief and Prolonged

Brief as an adjective:

Of short duration; happening quickly.

Examples:

"Her reign was brief but spectacular."
Brief as an adjective:

Concise; taking few words.

Examples:

"His speech of acceptance was brief but moving."
Brief as an adjective:

Occupying a small distance, area or spatial extent; short.

Examples:

"Her skirt was extremely brief but doubtless cool."
Brief as an adjective (obsolete):

Rife; common; prevalent.

Brief as a noun (legal):

A writ summoning one to answer to any action.
Brief as a noun (legal):

An answer to any action.
Brief as a noun (legal):

A memorandum of points of fact or of law for use in conducting a case.
Brief as a noun (by extension, figurative):

A position of interest or advocacy.
Brief as a noun (legal):

An attorney's legal argument in written form for submission to a court.
Brief as a noun (English law):

The material relevant to a case, delivered by a solicitor to the barrister who tries the case.
Brief as a noun:

A short news story or report.
Brief as a noun (usually, plural):

undershorts briefs.

Examples:

"I wear boxers under trousers but for sports I usually wear a brief."
Brief as a noun (obsolete):

A summary, précis or epitome; an abridgement or abstract.
Brief as a noun (UK, historical):

A letter patent, from proper authority, authorizing a collection or charitable contribution of money in churches, for any public or private purpose.
Brief as a noun:

(slang) A ticket of any type.

Brief as a verb (transitive):

To summarize a recent development to some person with decision-making power.

Examples:

"The U.S. president was briefed on the military coup and its implications on African stability."
Brief as a verb (transitive, legal):

To write a legal argument and submit it to a court.