КОПИТЬ _|_ DRINK / KOPIT [kɐˈpʲitʲ]
Hint with an alternative definition: it is like to make copies to a copious amount — from a cup (small amount) to a pit (huge amount) or to keep copper coins (or kopeck coins) safe, they can be kept under a carpet or in a bank account (deposit)
Hints with translation + consonant words (by sounds or letters): to scrape up (money) & put on account for a cap (limit) / to build capital by savings / to cope with a pocket full of crap (money) and not to spend it / like to grow a coppice from a sprout
Russian pro-tip: капля + капля = можно пить (чашка с водой) / копейка + копейка / коп (копить) | пок (покупать) / копье + копье или 1 + 1 + 1 = капитал.
Mental visualization: K (connection of two arrows at one point) + O (coin) + П (pocket)