As adverbs the difference between erstwhile and umwhile

is that erstwhile is formerly; in the past while umwhile is formerly; late; whilom.

As adjectives the difference between erstwhile and umwhile

is that erstwhile is former, previous while umwhile is erstwhile; late; former.

As a noun late

is (kind of) hatchet, axe, chopper.

As an adjective umwhile is

(obsolete|outside|dialects|chiefly|scotland) erstwhile; late; former.

As an adverb umwhile is

(obsolete|outside|dialects|chiefly|scotland) formerly; late; whilom.

As adjectives the difference between former and umwhile

is that former is previous while umwhile is (obsolete|outside|dialects|chiefly|scotland) erstwhile; late; former.

As a noun former

is someone who forms something; a maker; a creator or founder.

As an adverb umwhile is

(obsolete|outside|dialects|chiefly|scotland) formerly; late; whilom.

As adverbs the difference between formerly and umwhile

is that formerly is at some time in the past while umwhile is (obsolete|outside|dialects|chiefly|scotland) formerly; late; whilom.

As an adjective umwhile is

(obsolete|outside|dialects|chiefly|scotland) erstwhile; late; former.

As adjectives the difference between uninformed and uninformedly

is that uninformed is not informed; ignorant while uninformedly is in an uninformed way; ignorantly.

As a noun ignorant

is ignorant person, ignoramus.

As an adjective uninformedly is

in an uninformed way; ignorantly.

As an adjective uninformed

is not informed; ignorant.

As a noun uninformedness is

the state or condition of being uninformed; ignorant, oblivious.

As nouns the difference between ignorant and uninformedness

is that ignorant is ignorant person, ignoramus while uninformedness is the state or condition of being uninformed; ignorant, oblivious.

As an adjective oblivious

is (usually followed by to'' or ''of ) lacking awareness; unmindful; unaware, unconscious of.

As a noun uninformedness is

the state or condition of being uninformed; ignorant, oblivious.

As adjectives the difference between discardable and undiscardable

is that discardable is that can be discarded while undiscardable is not discardable.