Phnom rhymes with:
nom, petrovietnam, surinam, vietnam, alm, altom, amraam, anscom, anscomb, aplomb, balm, basam, baucom, becalm, blom, bohm, bom, bomb, brahm, brom, bromm, calm, cdrom, cocom, com, crom, dohm, dom, embalm, flom, fromm, fromme, glomb, grom, guam, halm, hom, homme, islam, krom, kromm, lomb, malm, mam, mom, nom, overstrom, palm, palme, petrovietnam, pogrom, prom, qom, quam, rom, romm, saam, salaam, salam, salm, schrom, som, strahm, strom, stromme, suddam, surinam, thom, throm, tom, vietnam, yom, zalm
Phnom sounds like:
p.m., pabon, paean, pain, paine, paino, pam, pammy, pan, panam, panama, panamanian, pane, panem, panini, pannone, pannu, panny, paone, papania, papin, papineau, papini, papon, pavon, pavone, pawn, pawnee, pay'n, payan, payin', payna, payne, peine, pen, pena, penh, penman, penn, penna, penney, pennie, penniman, pennino, penny, peon, peony, pepin, peppin, peyman, pham, phan, phen, phenom, phenomena, phenomenon, phinney, phippen, phone, phoneme, phoney, phony, piana, piano, pima, pimm, pin, pina, pine, pineau, pineo, pinho, pini, pinion, pinn, pinneo, pinney, pinnow, pino, piny, pinyan, pion, pippen, pippin, pm, pneumo, pneumonia, poem, pom, poma, pomona, pon, pony, poon, popham, poppen, ppm, puffin, puma, pun, puny, pymm, pyne