tapster vs tapper

tapster and tapper both are nouns.

Word	Noun	Adjective	Verb	Adverb
tapster	Yes	No	No	No
tapper	Yes	No	No	No

As nouns, tapster and tapper are synonyms defined as:

tapster (noun)	tapper (noun)
a tavern keeper who taps kegs or casks	someone who wiretaps a telephone or telegraph wire
	a tavern keeper who taps kegs or casks
	a worker who uses a tap to cut screw threads
	a dancer who sounds out rhythms by using metal taps on the toes and heels of the shoes
	a person who strikes a surface lightly and usually repeatedly