Communism rhymes with:
unionism, abolitionism, agrarianism, americanism, anachronism, antagonism, arianism, authoritarianism, buchananism, chauvinism, confucianism, creationism, determinism, egalitarianism, expansionism, expressionism, hedonism, hellenism, hooliganism, humanism, illusionism, impressionism, interventionism, isolationism, mechanism, microorganism, obstructionism, organism, paganism, perfectionism, peronism, protectionism, puritanism, reaganism, republicanism, revisionism, satanism, sectarianism, tokenism, totalitarianism, unionism, zionism
Communism sounds like:
cancan, cancienne, cancino, cancom, cancun, cangemi, cangiano, canson, canzano, chang-hsin, changchun, chiengmai, cinnaminson, cinnamonson, cinquemani, coenzyme, comecon, commision, commission, concannon, concession, concussion, conjoin, conkin, conshohocken, consign, consume, cookingham, cunningham, cyanazine, cynicism