types:
development
the act of improving by expanding, enlarging, or refining
reform
a change for the better as a result of correcting abuses
enrichment
act of making fuller or more meaningful or rewarding
upturn
an upward movement or trend as in business activity
upgrade
the act of improving something (especially machinery) by raising it to a higher grade (as by adding or replacing components)
spring-cleaning
the activity of cleaning a house thoroughly at the end of winter
dry cleaning
the act of cleaning (fabrics) with a solvent other than water
sweeping
the act of cleaning with a broom
purge,
purging
an act of removing by cleansing; ridding of sediment or other undesired elements
purification
the act of cleaning by getting rid of impurities
sterilisation,
sterilization
the procedure of making some object free of live bacteria or other microorganisms (usually by heat or chemical means)
land reform
a redistribution of agricultural land (especially by government action)
reform
self-improvement in behavior or morals by abandoning some vice
fortification
the addition of an ingredient for the purpose of enrichment (as the addition of alcohol to wine or the addition of vitamins to food)
face lift,
face lifting,
facelift
a renovation that improves the outward appearance (as of a building) but usually does not involve major changes
darning
the act of mending a hole in a garment with crossing threads
patching
the act of mending a hole in a garment by sewing a patch over it
restoration
the act of restoring something or someone to a satisfactory state
restitution
the act of restoring something to its original state
housecleaning
the act of cleaning the rooms and furnishings of a house
housecleaning
(figurative) the act of reforming by the removal of unwanted personnel or practices or conditions
emendation
a correction by emending; a correction resulting from critical editing