sieve vs sift

sieve is a noun but sift is not a noun.

Word	Noun	Adjective	Verb	Adverb
sieve	Yes	No	Yes	No
sift	No	No	Yes	No

As verbs, sieve and sift are synonyms defined as:

As verbs, sieve and sift are synonyms defined as:

sieve and sift: separate by passing through a sieve or other straining device to separate out coarser elements

Other synonyms of sieve include strain.

As verbs, sieve and sift are synonyms defined as:

sieve (noun)	sift (noun)
a strainer for separating lumps from powdered material or grading particles

sieve (verb)	sift (verb)
distinguish and separate out	distinguish and separate out
separate by passing through a sieve or other straining device to separate out coarser elements	separate by passing through a sieve or other straining device to separate out coarser elements
check and sort carefully	check and sort carefully
examine in order to test suitability	move as if through a sieve