phob'os, fear—hydrophobia (hudor, water).
phra'sis, speech—phrase, phraseology, paraphrase.
phren, the mind—phrenology, frantic, frenzy.
phu'ton, a plant—zoophyte.
pla'naein, to wander—planet, planetary.
plas'sein, to mould—plaster, plastic.
pleu'ra, the side—pleurisy.
pneu'ma, breath, spirit—pneumatic.
po'lein, to sell—bibliopolist, monopoly, monopolize.
pol'us, many—polygamy, polyglot, polysyllable, polytechnic.