词根词缀：fac-, facil-, fact-, feas-, -feat, -fect, -feit, -facient, -faction, -fic-, -fy, -ficate, -fication

【来源及含义】Latin: to make, to do, to build, to cause, to produce; forming, shaping

【同源单词】Ab officio et beneficio, abortifacient, absorbefacient, absorbifacient, acoustoelectric effect, affair

词根词缀：petro-, petr-, petri-, peter-

【来源及含义】Greek > Latin: stone, rock

【相关词根词缀】 Related "stone, rock" word families: lapid-; litho-; saxi-; stele-.

【同源单词】Peter, petracide, petrichor, petricole, petricoline, petricolous