The difference between Ignoble and Noble

When used as adjectives, ignoble means not noble, whereas noble means having honorable qualities.

Noble is also noun with the meaning: an aristocrat.

check bellow for the other definitions of Ignoble and Noble

Ignoble as an adjective:

Not noble; plebeian; common.
Ignoble as an adjective:

Not honorable; base.
Ignoble as an adjective:

Not a true or "noble" falcon; said of certain hawks, such as the goshawk.

Noble as a noun:

An aristocrat; one of aristocratic blood.

Examples:

"This country house was occupied by nobles in the 16th century."
Noble as a noun (now, historical):

A medieval gold coin of England in the 14th and 15th centuries, usually valued at 6s 8d.

Noble as an adjective:

Having honorable qualities; having moral eminence and freedom from anything petty, mean or dubious in conduct and character.

Examples:

"He made a noble effort."

"He is a noble man who would never put his family in jeopardy."
Noble as an adjective:

Grand; stately; magnificent; splendid.

Examples:

"a noble edifice"
Noble as an adjective:

Of exalted rank; of or relating to the nobility; distinguished from the masses by birth, station, or title; highborn.

Examples:

"'noble blood; a noble personage"
Noble as an adjective (geometry, of a [[polyhedron]]):

Both isohedral and isogonal.