seltzer

As a noun seltzer

is carbonated water.

As an adjective false is

(label) one of two states of a boolean variable; logic.

As a noun seltzer

is carbonated water.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between seltzer and cider

is that seltzer is carbonated water while cider is an alcoholic, sparkling (carbonated) beverage made from fermented apples.

As nouns the difference between cooler and seltzer

is that cooler is (countable) anything which cools while seltzer is carbonated water.

As an adjective cooler

is (cool).

As nouns the difference between seltzer and spritzer

is that seltzer is carbonated water while spritzer is a tall, chilled drink, made from white wine and soda water.

As nouns the difference between seltzer and sparking

is that seltzer is carbonated water while sparking is the act of producing a spark.

As a verb sparking is

.

As nouns the difference between seltzer and club

is that seltzer is carbonated water while club is club (association of members).

As nouns the difference between seltzer and tonic

is that seltzer is carbonated water while tonic is a substance with medicinal properties intended to restore or invigorate or tonic can be (music) the first note of a scale.

As an adjective tonic is

(physics|pathology) pertaining to tension, especially of muscles or tonic can be (music) pertaining to the keynote of a composition.

As nouns the difference between taxonomy and seltzer

is that taxonomy is the science or the technique used to make a classification while seltzer is carbonated water.