Foreswear vs Abjure - What's the difference?

As verbs the difference between foreswear and abjure

is that foreswear is while abjure is .

(abjur)

To renounce upon oath; to forswear; to disavow.

To abjure allegiance to a prince.

To abjure the realm (to swear to abandon it forever).

(transitive, obsolete, historical) To cause one to renounce or recant.

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

To abjure errors.

* 1610 , , act 5 scene 1

But this rough magic I here abjure [...]

To abstain from; to avoid; to shun.

* renounce

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