Ignoble vs Heinous - What's the difference?

Ignoble is a synonym of heinous.

is that ignoble is not noble; plebeian; common while heinous is totally reprehensible.

(en adjective)

Not noble; plebeian; common.

* Shakespeare

I was not ignoble of descent.

Not honorable; base.

* Shakespeare

A base, ignoble mind, / That mounts no higher than a bird can soar.

* Gray

far from the madding crowd's ignoble strife

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

* (English Citations of "ignoble")

* (common) common, plebeian, vulgar * (not honorable) degenerate, mean, base, despicable, dishonorable, reproachful, shameful, disgraceful, vile

* (common) noble * (not honorable) noble, honorable

* ignobility * ignobleness * ignobly

* ----

(en adjective)

Totally reprehensible.

I hope they catch the person responsible for that heinous crime.

The perpetrators of this heinous act must be brought to justice.

The government denounced the attack as the most heinous of the last decade.

Political Leaders from around the world have condemned these heinous acts.

In our public services sorry seems to be the most heinous word.

* Nouns to which "heinous" is often applied: crime, act, sin, murder, offence.

* (totally reprehensible) abominable, horrible, odious