As nouns the difference between ambiguity and fuzziness

is that ambiguity is (countable) something, particulary words and sentences, that is open to more than one interpretation, explanation or meaning, if that meaning etc cannot be determined from its context while fuzziness is the state or quality of being fuzzy.

As nouns the difference between ambiguities and fuzziness

is that ambiguities is while fuzziness is the state or quality of being fuzzy.

As a verb different

is .

As an adjective indistinguishable is

not distinguishable; not capable of being perceived, known, or discriminated as separate and distinct.

As nouns the difference between spy and agents

is that spy is a person who secretly watches and examines the actions of other individuals or organizations and gathers information on them (usually to gain an advantage) while agents is plural of lang=en.

As a verb spy

is to act as a spy.

As nouns the difference between doer and pioneer

is that doer is serf while pioneer is one who goes before, as into the wilderness, preparing the way for others to follow.

As an adjective doer

is servile.

As a verb pioneer is

to go before and prepare or open a way for; to act as pioneer.

As nouns the difference between cosmography and cartography

is that cosmography is the creation of maps of the universe while cartography is the creation of charts and maps based on the layout of a territory's geography.

As nouns the difference between trestle and rack

is that trestle is a horizontal member supported near each end by a pair of divergent legs, such as sawhorses while rack is a series of one or more shelves, stacked one above the other.

As a verb rack is

to place in or hang on a rack.

As adjectives the difference between concise and undefined

is that concise is brief, yet including all important information while undefined is lacking a definition or value.

In transitive terms the difference between hoist and jack

is that hoist is to raise; to lift; to elevate; especially, to raise or lift to a desired elevation, by means of tackle or pulley, as a sail, a flag, a heavy package or weight while jack is to raise or increase.

In intransitive terms the difference between hoist and jack

is that hoist is to be lifted up while jack is to dance by moving the torso forward and backward in a rippling motion.

As a proper noun Jack is

a given name derived from Hebrew, also used as a pet form of John.

As a proper noun slick

is a term of address, generally applied to males, possibly including strangers, implying that the person addressed is slick in the sense of "sophisticated", but often used sarcastically.

As an adverb really is

(lb) actually; in fact; in reality.

As an interjection really is

indicating surprise at, or requesting confirmation of, some new information; to express skepticism.