a small, round piece of metal, usually silver or copper coloured, that is used as money
coin
Investors were seriously worried when the stock market began to crash/ collapse/ smash/ destroy
smash
She invests in stocks and shares/ portions/ distributions/ parts in Apple company
shares
He's not certain whether to invest/ pay/ count/ speculate in the property market
invest
The bank teller/ speaker/ holder/ finder looked at the notes carefully when I passed them to him
teller
