V1. vacant-V2. vehicle

vacant, vacation, vacuum

构词：vac（空）＋-ant（adj.）

空着的 adj. 未被占用的。

相关：wane, want; vain, vanity, vanish, avoid, evacuate

搭配：vacant seat / room / property / parking space / position / look 

vacation  n. 假期。

Christmas / summer / winter / long / short / paid / happy vacation, 

on vacation, take a vacation 

vacuum  n. 真空（吸尘器）。adj. 真空的。v. 用吸尘器清洁。

vacuum-packed foods, power vacuum; create a vacuum

vacuum the room, vacuum up 

同义：vacant = empty, free, idle, unoccupied, available

vacation = holiday, rest, leave, break, tour, trip

vehicle

构词：veh（运转）＋icle（圆 n.）

运转的轮子 n. 交通工具，车辆，手段。

相关：wagon，way；convey，voyage，deviate，trivial，previous

搭配：motor / parked / stolen / oncoming / luxury vehicles；

            a vehicle for propaganda / one’s talents / political beliefs