Question

sort the words according to the meanings of their shared roots. infraction fractious forte refortify corneous diffraction bicorn fortify break strength horn

Explanation:

The root "fract -" means break, so "infraction", "fractious", "diffraction" go in the "break" category. The root "fort -" means strength, so "forte", "refortify", "fortify" go in the "strength" category. The root "corn -" means horn, so "corneous", "bicorn" go in the "horn" category.

Answer:

break: infraction, fractious, diffraction
strength: forte, refortify, fortify
horn: corneous, bicorn