Difference between Willing and Fain

WILLING vs FAIN: NOUN

Done, given, or accepted voluntarily or ungrudgingly. : voluntary.
Acting or ready to act gladly; eagerly compliant.
Disposed or inclined; prepared.
Disposed or willing to comply
Disposed or inclined toward
Ready to do something that is not (can't be expected as) a matter of course.
Free to do or to grant; having the mind inclined; not opposed in mind; not choosing to refuse; disposed; not averse; desirous; consenting; complying; ready.
Received of choice, or without reluctance; submitted to voluntarily; chosen; desired.
Spontaneous; self-moved.
Not brought about by coercion or force

Spontaneous, etc. See voluntary.
Synonyms Minded.
In harmony or accord; like-minded.
Characterized by promptness or readiness in action; free from reluctance, laziness, or slowness: willing horse; a willing hand.
Voluntary; cheerfully given, granted, done, or borne: as, willing service; willing poverty.
Favorably disposed; ready; inclined; desirous: as, willing to work; willing to depart.

Gladly; with pleasure or content: with would.
Glad; pleased; rejoiced: used absolutely or followed by an infinitive: as, I am fain to see you.
Glad, in a relative sense; content or willing to accept an alternative to something better but unattainable: followed by an infinitive: as, he was fain to run away.
An obsolete spelling of feign (retained in the derivative faint).
To be fain; be glad; rejoice.
To fawn. See fawn, verb
To fill with gladness; cause to rejoice.
To wish; desire; long.
To acquiesce in; accept with reluctance, as an alternative.
With pleasure

Unforced, Disposed, Lief, Volitional, Volition, Compliant, Uncoerced, Voluntary, Consenting, Fain, Glad, Amenable, Prepared, Ready, Inclined

Verily, Insensibly, Nilly, Foully, Adown, Whoso, Unrestrainedly, Peradventure, Forsooth, Volitionally, Disposed, Prepared, Willing, Willingly, Inclined

Willing and able, Unforced, Disposed, Volitional, Volition, Compliant, Uncoerced, Voluntary, Consenting, Fain, Glad, Amenable, Prepared, Ready, Inclined

Interiorly, Uprightly, Verily, Insensibly, Nilly, Adown, Whoso, Unrestrainedly, Peradventure, Forsooth, Disposed, Prepared, Willing, Willingly, Inclined

But providing as much information as possible, being willing to triage and answer questions, and being willing to test potential fixes is even better!
Market value is what someone is willing to pay that someone else is willing to sell at.
Buyer is willing to fork over and the Seller is willing to use as collateral to secure the transaction.
If you guys are willing to get me or my team to become a transcriptionist we are so willing to do so.
The price at which an asset would change hands in a transaction between a willing, informed buyer and a willing, informed seller.
The price that a willing buyer and a willing seller, both given full information, and neither under pressure to act, would agree upon.
Fair market value can be defined as the price at which an asset or service passes from a willing seller to a willing buyer.
The price for which a share could be transferred between a willing buyer and a willing seller.
Because of this, there were many market participants willing to sell credit protection but few willing to purchase it.
The price that a willing buyer and a willing seller would agree to.