nouns
a tavern keeper who taps kegs or casks
a person who strikes a surface lightly and usually repeatedly
"finger tappers irritated her"
is a type of (narrower)
a human being
"there was too much for one person to do"
a worker who uses a tap to cut screw threads
is a type of (narrower)
a person who works at a specific occupation
"he is a good worker"
someone who wiretaps a telephone or telegraph wire
a dancer who sounds out rhythms by using metal taps on the toes and heels of the shoes