Phosphoric rhymes with:
safarik, alaric, berberich, broderick, butterick, choleric, cyanuric, dederick, diederich, dieterich, emerich, emerick, emmerich, friederich, friederike, garverick, giegerich, gingerich, gregorich, helmerich, hemmerich, honderich, kanarek, kasparek, kasperek, kauzlarich, klapperich, leverich, limerick, maverick, millerick, minarik, pekarek, puskarich, rhetoric, safarik
Phosphoric sounds like:
pacifiers, peacekeepers, phosphorous, phosphors, phosphorus