IPA: /ˈmɑːrkɪtpleɪs/
KK: /ˈmɑrkɪtˌpleɪs/
A place or situation where people buy and sell goods or services, or where ideas and opinions are shared and discussed.
The local marketplace is bustling with vendors selling fresh produce and handmade crafts.
Marketplace → It is formed from "market" (from Old North French *mercat*, meaning a place where goods are bought and sold) and "place" (from Old French *place*, meaning a space or area). The word "marketplace" refers to a designated area where buying and selling occurs.
Think of a 'place' where people come together to 'trade goods' — that's what a marketplace is.
No commonly confused words.