pollen

Pollen was borrowed from Latin pollen, meaning 'fine flour' or 'fine powder.' In the 18th century, Carl Linnaeus adopted this Latin word to name the fine, dust-like spores produced in the anthers of flowers.

The word kept its core sense of a fine, powdery substance — it simply shifted from describing flour in a Roman kitchen to describing the grains that carry a plant's reproductive material.

The facts given don't name any English cognates or related words, so none can be confirmed here.