What is two buttons on toilet?

One button on a toilet is typically labeled "half-flush" or "small flush," and is used for flushing liquid waste. This button uses less water than a full flush and is therefore more environmentally friendly. The other button on a toilet is typically labeled "full flush" or "big flush," and is used for flushing solid waste or larger amounts of toilet paper. This button uses more water than the half-flush option but is necessary to ensure that all waste is properly disposed of. Some toilets only have one button, which performs both functions.