1. "Платить" (platit') - This is the most common and general verb meaning "to pay".
2. "Оплачивать" (oplachivat') - This verb also means "to pay", but it implies a more formal or official payment.
3. "Заплатить" (zaplatit') - This is the past tense of "платить", meaning "to have paid".
4. "Оплата" (oplata) - This is the noun meaning "payment".
Examples:
* Платить за квартиру (platit' za kvartiru) - To pay for rent
* Оплачивать услуги (oplachivat' uslugi) - To pay for services
* Заплатил за бензин (zaplatil za benzin) - Paid for gasoline
* Оплата проезда (oplata proezda) - Payment for travel
The best way to choose the right translation depends on the specific context of your sentence.