It is all clear. The question is how to attract miners when there is no block reward (or it becomes too small after several halvings) and the transaction fees are not high enough to engage them in mining so that they are in profit (currently they are relatively small).
there is still a "reward" (payment to miners)
but not from the protocols native supply creation..
the "reward" is an amount of coin in the first transaction of a block that goes to an address set by the miner.
the reward(payment to miners) however is a combination of the "block reward" of supply creation protocol + any fee's
conversationally when the "block reward" word is used people are commonly speaking in a simplified way of the supply creation.. and not the "total reward for miners" which includes the fee "reward" ('reward' vs 'block reward' word jargon difference)
.. yes its confusing in human speak, but its a throw-back to the early days when blockreward was 100% supply creation with no fee's
but when the supply creation becomes zero the 'total reward for miners' that is the total amount that goes into the address of the first transaction of a block would be 100% fee's zero supply creation amount
in the future(2140+) the common speak of "blockreward" will be of the fees alone