Question

sort the words according to the meanings of their shared roots. orator orifice omniscience oracle omnipresent oration mouth all

Explanation:

The root - "or" is related to the mouth as seen in "orator" (a public speaker), "oracle" (a person regarded as a source of wise counsel), "oration" (a formal speech), and "orifice" (a small opening, often related to the mouth or other body openings). The root - "omni" means all, as in "omniscience" (all - knowing) and "omnipresent" (present everywhere).

Answer:

Mouth: orator, oracle, oration, orifice
All: omniscience, omnipresent