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：simal-, simil-, simul-, -semble

【来源及含义】Latin: same, like, alike; same time; to appear, to seem; together

【同源单词】assemblage, assemble, assembly, assembly line, assimilable, assimilate