partaker vs sharer

partaker and sharer both are nouns.

Word	Noun	Adjective	Verb	Adverb
partaker	Yes	No	No	No
sharer	Yes	No	No	No

As nouns, partaker and sharer are synonyms defined as:

partaker and sharer: someone who has or gives or receives a part or a share

partaker (noun)	sharer (noun)
someone who has or gives or receives a part or a share	someone who has or gives or receives a part or a share