The difference between Abjure and Renounce

When used as verbs, abjure means to renounce upon oath, whereas renounce means to give up, resign, surrender, atsake.

Renounce is also noun with the meaning: an act of renouncing.

check bellow for the other definitions of Abjure and Renounce

Abjure as a verb (transitive):

to renounce upon oath; to forswear; to disavow.

Examples:

"To abjure allegiance to a prince."

"To abjure the realm (''to swear to abandon it forever'')."
Abjure as a verb (transitive, obsolete, historical):

to cause one to renounce or recant.
Abjure as a verb (transitive):

to reject with solemnity; to abandon forever; to repudiate; to disclaim.

Examples:

"To abjure errors."
Abjure as a verb (transitive):

to abstain from; to avoid; to shun.

Renounce as a verb (transitive):

To give up, resign, surrender, atsake.

Examples:

"to renounce a title to land or to a throne"
Renounce as a verb (transitive):

To cast off, repudiate.
Renounce as a verb (transitive):

To decline further association with someone or something, disown.
Renounce as a verb (transitive):

To abandon, forsake, discontinue (an action, habit, intention, etc), sometimes by open declaration.
Renounce as a verb (intransitive):

To make a renunciation of something.
Renounce as a verb (intransitive):

To surrender formally some right or trust.
Renounce as a verb (intransitive, card games):

To fail to follow suit; playing a card of a different suit when having no card of the suit led.