different between lippage vs slippage

English

lip +? -age

lippage (uncountable)

An uneven surface of a floor that occurs when stone or tiles are not laid to a uniform level

slip +? -age

slippage (countable and uncountable, plural slippages)

The act of slipping, especially from a secure location.
The amount by which something has slipped.
A lessening of performance or achievement.
Supply-chain problems led to a slippage in production last week.
A decrease in motion, or in the power of a mechanical system due to slipping.
The difference between estimated and actual transaction costs.
Movement of earth on a slope, a landslip.

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