phone tapper vs wiretapper

phone tapper and wiretapper both are nouns.

Word	Noun	Adjective	Verb	Adverb
phone tapper	Yes	No	No	No
wiretapper	Yes	No	No	No

As nouns, phone tapper and wiretapper are synonyms defined as:

phone tapper and wiretapper: someone who wiretaps a telephone or telegraph wire

Other synonyms of phone tapper include tapper.

phone tapper (noun)	wiretapper (noun)
someone who wiretaps a telephone or telegraph wire	someone who wiretaps a telephone or telegraph wire