Complementation and Improvement

noun

• The grammatical relation of a word or phrase to a predicate.
• Linguistics) a distribution of related speech sounds or forms in such a way that they only appear in different contexts. (.
  • synonyms: complementary distribution

noun

• A change for the better; progress in development.
  • synonyms: betterment, advance
• The act of improving something.
  • usage: "their improvements increased the value of the property"
• A condition superior to an earlier condition.
  • usage: "the new school represents a great improvement"
  • synonyms: melioration

• (n.) Increase; growth; progress; advance.
• (n.) The state of being improved; betterment; advance; also, that which is improved; as, the new edition is an improvement on the old.
• (n.) Valuable additions or betterments, as buildings, clearings, drains, fences, etc., on premises.
• (n.) The act of making profitable use or applicaton of anything or the state of being profitably employed; a turning to good account; practical application, as of a doctrine, principle or theory, stated in a discourse.
• (n.) A useful addition to or modification of, a machine, manufacture or composition.
• (n.) The act of improving; advancement or growth; promotion in desirable qualities; progress toward what is better; melioration; as, the improvement of the mind, of land, roads, etc.

1) Any structure, usually privately owned, erected on a site to enhance the value of the property-for example, building a fence or a driveway. 2) A publicly owned structure added to or benefiting land, such as a curb, sidewalk, street or sewer.