The word cyclops comes from the greek root kyklos, which literally means "round eye." which of the following pairs of words are not derived from the same root?
a group; coterie
b crown; halo
c rotation; revolution
d collision; conflict

B. crown; halo

Explanation:

The word  crown has 3 types of root: coroune, croune, "royal crown, ornament for the head as a symbol of sovereignty," from Anglo-French coroune, Old French corone and directly from Latin corona "crown," originally "wreath, garland," related to Greek korōnē "anything curved, a kind of crown."

The word halo  is described as a "ring of light around the sun or moon," from Latin halo, from Greek halos "disk of the sun or moon; ring of light around the sun or moon" (also "disk of a shield"); "threshing floor; garden," of unknown origin.

edmund spenser and john bunyan is the answer. hope i !

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