As verbs the difference between zoning and downzone

is that zoning is while downzone is (us|politics) to change an area or property to a less restrictive zoning.

As a noun zoning

is (legal) legislative action for the purpose of regulating the use of property and the construction of buildings within the area under the jurisdiction of the legislative body concerned.

As nouns the difference between protonation and guanidium

is that protonation is (chemistry) the addition of a proton (hydrogen ion) to an atom, molecule or ion, normally to generate a cation while guanidium is (organic chemistry) the monovalent cation formed by protonation of guanidine.

As nouns the difference between guanidine and guanidium

is that guanidine is (organic compound) a strong base hn=c(nh₂)₂ obtained by the oxidation of guanine while guanidium is (organic chemistry) the monovalent cation formed by protonation of guanidine.

As a noun tent

is a pavilion or portable lodge consisting of skins, canvas, or some strong cloth, stretched and sustained by poles, used for sheltering persons from the weather.

As a verb tent

is to go camping.

As an adjective tentlike is

resembling a tent.

As nouns the difference between chlorocarbon and tetrachloroethylene

is that chlorocarbon is (chemistry) an organic compound containing at least one covalently bonded chlorine atom while tetrachloroethylene is tetrachloroethylene.

Tetrachloroethylene is a synonym of perchloroethylene.

As nouns the difference between perchloroethylene and tetrachloroethylene

is that perchloroethylene is an alternative name for tetrachloroethene, a non-combustible solvent commonly used in dry cleaning while tetrachloroethylene is a chlorocarbon with the formula C₂Cl₄, often used in dry cleaning.

Perc is a synonym of tetrachloroethylene.

As nouns the difference between perc and tetrachloroethylene

is that perc is perchloroethylene, a common solvent while tetrachloroethylene is tetrachloroethylene.

As a noun swoon

is swan.

As an adjective swoony is

tending to swoon or faint.

As adjectives the difference between faint and swoony

is that faint is lacking strength; weak; languid; inclined to swoon; as, faint with fatigue, hunger, or thirst while swoony is tending to swoon or faint.

As a noun faint

is the act of fainting.

As a verb faint

is to lose consciousness. Caused by a lack of oxygen or nutrients to the brain, usually as a result of a suddenly reduced blood flow (may be caused by emotional trauma, loss of blood or various medical conditions).

As an adjective skilled

is having or showing skill; skilful.

As a verb skilled

is (skill).

As a noun superagent is

a highly skilled or prominent agent, particularly in show business.