01Maker vs taker
In short: a resting order that gets filled is maker; taking someone's existing order is taker. On most exchanges maker is cheaper than taker, to reward providing liquidity. For the two exact rates, check your account's fee page rather than copying old numbers.
02Trimming it further
Raising your VIP level and turning on GT deduction both push the rate down. For turning on GT deduction see this guide; for the tier structure see VIP fee tiers. For frequent traders the gap compounds.