阀 ⇒
阀 fá, [閥], powerful individual, family or group/clique/(loanword) valve
阀门 fámén, [閥門], valve (mechanical)
军阀 jūnfá, [軍閥], military clique/junta/warlord
气阀 安全阀 ānquánfá, [安全閥], safety valve
调节阀 节流阀 jiéliúfá, [節流閥], a throttle
控制阀 排气阀 止回阀 财阀 cáifá, [財閥], plutocracy/monopolistic corporation, esp. prewar Japanese zaibatsu/Korean chaebo...
芯 ⇒
芯片 xīnpiàn, computer chip/microchip
芯 xīn/xìn, lamp pith/wick, core
灯芯绒 dēngxīnróng, [燈芯絨], corduroy (textiles)
冰芯 机芯