up

As verbs the difference between up and feather

is that up is to upturn, to turn over while feather is to cover or furnish with feathers.

As a noun feather is

a branching, hair-like structure that grows on the bodies of birds, used for flight, swimming, protection and display.

As adjectives the difference between willing and up

is that willing is ready to do something that is not (can't be expected as) a matter of course while up is awake.

As nouns the difference between willing and up

is that willing is the execution of a will while up is the direction opposed to the pull of gravity.

As verbs the difference between willing and up

is that willing is present participle of lang=en while up is to increase or raise.

As an adverb up is

away from the centre of the Earth or other planet; in opposite direction to the downward pull of gravity.

As a preposition up is

toward the top of.

As a proper noun UP is

initialism of Upper Peninsula|lang=en.

As an initialism RUP

is initialism of w:Rational Unified Process|Rational Unified Process|lang=en.

As an adverb up is

away from the centre of the Earth or other planet; in opposite direction to the downward pull of gravity.

As a preposition up is

toward the top of.

As an adjective up is

awake.

As a noun up is

the direction opposed to the pull of gravity.

As a verb up is

to increase or raise.

As a proper noun UP is

initialism of Upper Peninsula|lang=en.

As a noun no

is noh (japanese theatrical genre).

As a verb up is

to upturn, to turn over.

As prepositions the difference between up and onto

is that up is toward the top of while onto is upon; on top of.

As adjectives the difference between up and onto

is that up is awake while onto is assuming each of the values in its codomain; having its range equal to its codomain.

As an adverb up

is away from the centre of the Earth or other planet; in opposite direction to the downward pull of gravity.

As a noun up

is the direction opposed to the pull of gravity.

As a verb up

is to increase or raise.

As a proper noun UP

is initialism of Upper Peninsula|lang=en.

As adverbs the difference between up and aboard

is that up is away from the centre of the Earth or other planet; in opposite direction to the downward pull of gravity while aboard is on board; into or within a ship or boat; hence, into or within a railway car.

As prepositions the difference between up and aboard

is that up is toward the top of while aboard is on board of; onto or into a ship, boat, train, plane.

As an adjective up

is awake.

As a noun up

is the direction opposed to the pull of gravity.

As a verb up

is to increase or raise.

As a proper noun UP

is initialism of Upper Peninsula|lang=en.

As a noun break

is break.

As a verb up is

to upturn, to turn over.

As an adjective superior

is higher in quality.

As a noun superior

is a person of higher rank or quality.

As a verb up is

to upturn, to turn over.

As a verb up

is to upturn, to turn over.

As a preposition about is

in a circle around; all round; on every side of; on the outside of .

As an adverb about is

not distant; approximate.

As an adjective about is

moving around; astir.

As a preposition before

is earlier than (in time).

As an adverb before

is at an earlier time.

As a conjunction before

is in advance of the time when.

As a verb up is

to upturn, to turn over.