As adjectives the difference between discerning and nondiscerning

is that discerning is of keen insight or good judgement; perceptive while nondiscerning is not discerning.

As a verb discerning

is .

As a noun discerning

is discernment.

As adjectives the difference between shameful and nonshameful

is that shameful is causing or meriting shame or disgrace; disgraceful while nonshameful is not shameful.

As nouns the difference between witness and nonwitness

is that witness is attestation of a fact or event; testimony while nonwitness is one who is not a witness.

As a verb witness

is to furnish proof of, to show.

As adjectives the difference between truthful and nontruthful

is that truthful is honest, and always telling the truth while nontruthful is not truthful.

As a noun spark

is a small particle of glowing matter, either molten or on fire or spark can be a gallant, a foppish young man.

As a verb spark

is to trigger, kindle into activity (an argument, etc) or spark can be to woo, court.

As an adjective nonsparking is

that does not give off sparks.

As a noun park

is an area of land set aside for environment preservation and/or informal recreation.

As a verb park

is to bring (something such as a vehicle) to a halt or store in a specified place.

As a proper noun Park

is {{surname|from=Korean}}, the English form of a surname very common in Korea. (박, 朴). The third most common Korean surname.

As an adjective parkable is

capable of being parked.

As a noun sump

is a hollow or pit into which liquid drains, such as a cesspool, cesspit or sink.

As a verb sump

is of a cave passage, to end in a sump, or to fill completely with water on occasion.

As an adjective sumplike is

resembling or characteristic of a sump.

As adjectives the difference between parenthetical and nonparenthetical

is that parenthetical is using, containing, or within parentheses (like this) while nonparenthetical is not parenthetical.

As a noun parenthetical

is a word or phrase within parentheses.

As nouns the difference between upbeat and upbeatness

is that upbeat is an unaccented beat at the start of a musical phrase while upbeatness is the state or condition of being upbeat.

As an adjective upbeat

is having a fast pace, tempo, or beat.

As adjectives the difference between undesirable and nondesirable

is that undesirable is objectionable or not likely to please while nondesirable is undesirable.

As a noun undesirable

is an undesirable person.