All 6 Uses

yield
in
The Fiend And The Forge
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Massachusetts Bay yielded nothing of note; there were no indications of Boston or of any human habitation whatsoever.
Chpt 8 — *

yielded = produced
When his additional questions failed to yield any answers, Max left the foyer and explored the mansion.†
Chpt 20 —

yield = produce or give
He would not yield to treachery, or, poison, or even Astaroth himself.†
Chpt 23 — *

yield = give in, give way, or give up
The only thing that had changed was the Demon's attire, for instead of luminous white, he now wore robes that were of such unyielding black that they seemed woven of the void.†
Chpt 24 —

unyielding = strict, firm, or hard (not giving in, not giving way, or not giving up)

standard prefix: The prefix "un-" in unyielding means not and reverses the meaning of yielding. This is the same pattern you see in words like unhappy, unknown, and unlucky.
It was wearisome work but quickly yielded appreciable results as soot gave way to clean stone, dark wood, and faded yellow paint.†
Chpt 17 —
They calculated the number of mouths to feed, egg production, planting cycles, harvest yields, and food storage.†
Chpt 18 —

Definitions:

(1) (yield as in: will yield valuable data)
to produce (usually something wanted); or the thing or amount produced
(2) (yield as in: yield to pressure)
to give in, give way, or give up
(3) (meaning too rare to warrant focus)