As nouns the difference between recommendation and sifter

is that recommendation is an act of recommending while sifter is a tool for sifting, especially one for powdered cooking ingredients.

As nouns the difference between recommendation and filtering

is that recommendation is an act of recommending while filtering is something that passes through a filter.

As a verb filtering is

.

As verbs the difference between maintain and audit

is that maintain is (obsolete|transitive) to support (someone), to back up or assist (someone) in an action while audit is to examine and adjust (eg an account).

As a noun audit is

an audience; a hearing.

As a noun here

is a time.

As an adverb hereat is

at this time; upon this event.

As adjectives the difference between languid and limp

is that languid is languid while limp is flaccid; flabby, as flesh.

As a verb limp is

to happen; befall; chance or limp can be to be inadequate or unsatisfactory or limp can be to walk lamely, as if favouring one leg.

As a noun limp is

a scraper of board or sheet-iron shaped like half the head of a small cask, used for scraping the ore off the sieve in the operation of hand-jigging or limp can be an irregular, jerky or awkward gait.

As adjectives the difference between innate and inward

is that innate is inborn; native; natural; as, innate vigor; innate eloquence while inward is situated on the inside; that is within, inner; belonging to the inside.

As a verb innate

is to cause to exist; to call into being.

As an adverb inward is

towards the inside.

As a noun inward is

(obsolete|chiefly|in the plural) that which is inward or within; the inner parts or organs of the body; the viscera.

As an adverb simultaneously

is occurring at the same time.

As an adjective mandatory is

obligatory; required or commanded by authority.

As a noun mandatory is

(dated|rare) a person, organisation or state who receives a mandate; a mandatary.

As nouns the difference between adventures and difficulties

is that adventures is while difficulties is .

As a verb adventures

is (adventure).

As verbs the difference between challenges and adventures

is that challenges is while adventures is (adventure).

As a noun adventures is

.

As nouns the difference between affiliate and particular

is that affiliate is someone or something that is affiliated, or associated; a member of a group of associated things while particular is a small individual part of something larger; a detail, a point.

As a verb affiliate

is to adopt; to receive into a family as a son; hence, to bring or receive into close connection; to ally.

As an adjective particular is

(obsolete) pertaining only to a part of something; partial.