Equitable vs Sincere - What's the difference?

Equitable is a related term of sincere.

is that equitable is just, equitable, fair while sincere is sincere.

* (obsolete)

(en adjective)

Marked by or having equity.

Fair, just, or impartial.

* 1748 , , Enquiries concerning the human understanding and concerning the principles of moral , London: Oxford University Press, 1973. § 33.

I may justly require you to produce that argument; nor have you any pretence to refuse so equitable a demand.

(legal) Relating to the general principles of justice that correct or supplement the provisions of the law.

(en-adj)

Genuine; meaning what one says or does; heartfelt.

I believe he is sincere in his offer to help.

Meant truly or earnestly.

She gave it a sincere , if misguided effort.

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