tap vs tapper

tap and tapper both are nouns.

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

tap (noun)	tapper (noun)
a light touch or stroke	someone who wiretaps a telephone or telegraph wire
the act of tapping a telephone or telegraph line to get information	a tavern keeper who taps kegs or casks
a faucet for drawing water from a pipe or cask	a worker who uses a tap to cut screw threads
a plug for a bunghole in a cask	a dancer who sounds out rhythms by using metal taps on the toes and heels of the shoes
a tool for cutting female (internal) screw threads	a person who strikes a surface lightly and usually repeatedly
a small metal plate that attaches to the toe or heel of a shoe (as in tap dancing)
the sound made by a gentle blow
a gentle blow

tap (verb)	tapper (verb)
make a solicitation or entreaty for something; request urgently or persistently
draw from; make good use of
strike lightly
cut a female screw thread with a tap
pierce in order to draw a liquid from
walk with a tapping sound
dance and make rhythmic clicking sounds by means of metal plates nailed to the sole of the dance shoes
draw (liquor) from a tap
tap a telephone or telegraph wire to get information
make light, repeated taps on a surface
draw from or dip into to get something
furnish with a tap or spout, so as to be able to draw liquid from it