词根词缀：arch, -archic, -archical, -archism, -archist, -archy

【来源及含义】Greek: govern, rule; ruler, chief [first in position]

【同源单词】anarch, anarchic, anarchism, anarchist, anarchy, antimonarchy

词根词缀：octa-, octo-, oct-, octi-, octon-

【来源及含义】Greek > Latin: eight, eighth

【同源单词】octachord, octad, octagon, octagonal, octagynous, octahedral