The difference between Concurrent and Leading

When used as nouns, concurrent means one who, or that which, concurs, whereas leading means an act by which one is led or guided.

When used as adjectives, concurrent means happening at the same time, whereas leading means providing guidance or direction.

check bellow for the other definitions of Concurrent and Leading

Concurrent as an adjective:

Happening at the same time; simultaneous.

Examples:

"rfquotek Francis Bacon"
Concurrent as an adjective:

Belonging to the same period; contemporary.
Concurrent as an adjective:

Acting in conjunction; agreeing in the same act or opinion; contributing to the same event or effect.
Concurrent as an adjective:

Joint and equal in authority; taking cognizance of similar questions; operating on the same objects.

Examples:

"the concurrent jurisdiction of courts"
Concurrent as an adjective (geometry):

Meeting in one point.
Concurrent as an adjective:

Running alongside one another on parallel courses; moving together in space.
Concurrent as an adjective (computing):

Involving more than one thread of computation.

Concurrent as a noun:

One who, or that which, concurs; a joint or contributory cause.
Concurrent as a noun:

One pursuing the same course, or seeking the same objects; hence, a rival; an opponent.
Concurrent as a noun:

One of the supernumerary days of the year over fifty-two complete weeks; so called because they concur with the solar cycle, the course of which they follow.
Concurrent as a noun:

One who accompanies a sheriff's officer as witness.

Leading as an adjective:

Providing guidance or direction

Examples:

"Avoid leading questions if you really want the truth."
Leading as an adjective:

Ranking first

Examples:

"He is a leading supplier of plumbing supplies in the county."
Leading as an adjective:

Occurring in advance; preceding

Examples:

"The stock market can be a leading economic indicator."

Leading as a noun (typography):

Vertical space added between lines; line spacing