Abatement (noun)

1. The act of reducing or lessening the severity or intensity of something.
2. The removal or elimination of something.

Origin:

The word "abatement" originated in the 14th century, it comes from the old french word "abattre" meaning to beat down or remove.

Examples:

1. There was an abatement in the noise level after midnight.
2. The government introduced an abatement program to reduce air pollution.
3. The company was fined for failure to comply with the abatement order.
4. The abatement of the nuisance required the removal of the source.
5. The abatement of the disease was due to the new medication.