What's the difference between aftermost and hindmost?

Aftermost

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Definition:

• (a. superl.) Hindmost; -- opposed to foremost.
• (a. superl.) Nearest the stern; most aft.

Example Sentences:

Hindmost

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Definition:

• (a.) Furthest in or toward the rear; last.

Example Sentences:

• (1) The penetration of (14)C-labeled ethylene glycol, erythritol, mannitol, and sucrose was measured in giant axons of various diameters isolated from the hindmost stellar nerves of Doryteuthis plei squid.