As nouns the difference between questions and riddles

is that questions is while riddles is .

As a verb riddles is

(riddle).

As nouns the difference between perjury and witness

is that perjury is (legal) the deliberate giving of false or misleading testimony under oath while witness is attestation of a fact or event; testimony.

As a verb witness is

to furnish proof of, to show.

As nouns the difference between structuralism and essentialism

is that structuralism is a theory of sociology that views elements of society as part of a cohesive, self-supporting structure while essentialism is the view that objects have properties that are essential to them.

As nouns the difference between campervan and caravans

is that campervan is (australia|nz|british) a vehicle that provides both transport and sleeping accommodation while caravans is .

As verbs the difference between campervan and caravans

is that campervan is to holiday in a campervan while caravans is (caravan).

In lang=en terms the difference between encroach and contravene

is that encroach is to advance gradually beyond due limits while contravene is to deny the truth of something.

As verbs the difference between encroach and contravene

is that encroach is (obsolete) to seize, appropriate while contravene is to act contrary to an order, or fail to conform to a regulation.

As a noun encroach

is (rare) encroachment.

As an adjective defiant

is defying.

As a noun effrontery is

insolent and shameless audacity.

As nouns the difference between stalker and harasser

is that stalker is stalker (a person who engages in stalking) while harasser is one who harasses.

As nouns the difference between stalk and harass

is that stalk is the stem or main axis of a plant, which supports the seed-carrying parts while harass is devastation; waste.

As verbs the difference between stalk and harass

is that stalk is to approach slowly and quietly in order not to be discovered when getting closer while harass is to fatigue or to tire with repeated and exhausting efforts.

As a verb dwelt

is (dwell).

As a proper noun live is

, a variant of liv.

As adjectives the difference between vaporous and volatile

is that vaporous is relating to vapour; misty, foggy, obscure, insubstantial while volatile is (physics) evaporating or vaporizing readily under normal conditions.