As nouns the difference between rungs and stairs

is that rungs is while stairs is (label) a contiguous set of steps connecting two floors.

As nouns the difference between questioner and questioning

is that questioner is a person who asks questions, or who conducts an official enquiry while questioning is the action of asking questions; a survey; an inquiry.

As an adjective questioning is

characterized by questions, inquisitiveness, doubt or wonder.

As a verb questioning is

.

As nouns the difference between civilisations and civilization

is that civilisations is while civilization is an organized culture encompassing many communities, often on the scale of a nation or a people; a stage or system of social, political or technical development.

As a proper noun civilization is

collectively, those people of the world considered to have a high standard of behavior and / or a high level of development commonly subjectively used by people of one society to exclusively refer to their society, or their elite sub-group, or a few associated societies, implying all others, in time or geography or status, as something less than civilised]], as savages or [[barbarian|barbarians cf refinement, elitism, civilised society, the civilised world .

As nouns the difference between increase and pickup

is that increase is an amount by which a quantity is increased while pickup is a car with a loading space; pickup truck.

As a verb increase

is (of a quantity) to become larger.

As an adjective noticeable

is worthy of note; significant.

As an adverb significantly is

in a significant manner or to a significant extent.

As adverbs the difference between repeatedly and reiteratedly

is that repeatedly is done several times or in repetition while reiteratedly is repeatedly.

As adjectives the difference between daunting and grueling

is that daunting is discouraging, inspiring fear while grueling is .

As a verb daunting

is .

As nouns the difference between constraints and parameter

is that constraints is while parameter is parameter.

As nouns the difference between recession and niche

is that recession is the act or an instance of receding or withdrawing while niche is a cavity, hollow, or recess, generally within the thickness of a wall, for a statue, bust, or other erect ornament. Hence, any similar position, literal or figurative.

As a verb niche is

{{cx|transitive|marketing|lang=en}} To specialize in a niche, or particular narrow section of the market.

As nouns the difference between monocot and divot

is that monocot is (botany) while divot is a torn up piece of turf (eg by a golf club in making a stroke or by a horse's hoof).