duality

As a letter s

is the letter s with a.

As a noun duality is

a classification into two subclasses or opposed parts.

As nouns the difference between duality and null

is that duality is a classification into two subclasses or opposed parts while null is zero, nil; the cardinal number before einn.

As a noun duality

is a classification into two subclasses or opposed parts.

As an adjective false is

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

As nouns the difference between dyad and duality

is that dyad is a set of two elements treated as one; a pair while duality is a classification into two subclasses or opposed parts.

As a noun duality

is a classification into two subclasses or opposed parts.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between duality and multiplicity

is that duality is a classification into two subclasses or opposed parts while multiplicity is the state of being made of multiple diverse elements.

As nouns the difference between duality and counterargument

is that duality is a classification into two subclasses or opposed parts while counterargument is an argument that is opposed to another argument.

As a noun duality

is a classification into two subclasses or opposed parts.

As an adjective ambidextrous is

having equal ability in both hands; in particular, able to write equally well with both hands.

As a noun duality

is a classification into two subclasses or opposed parts.

As an initialism bf is

boyfriend.

As a noun duality

is a classification into two subclasses or opposed parts.

As a proper noun trinity is

(christianity) in christian belief, the three persons (personae) of the godhead: father, son and holy spirit.