plunger vs plumber's helper

plunger and plumber's helper both are nouns.

Word	Noun	Adjective	Verb	Adverb
plunger	Yes	No	No	No
plumber's helper	Yes	No	No	No

As nouns, plunger and plumber's helper are synonyms defined as:

plunger and plumber's helper: hand tool consisting of a stick with a rubber suction cup at one end; used to clean clogged drains

plunger (noun)	plumber's helper (noun)
mechanical device that has a plunging or thrusting motion	hand tool consisting of a stick with a rubber suction cup at one end; used to clean clogged drains
hand tool consisting of a stick with a rubber suction cup at one end; used to clean clogged drains
someone who risks losses for the possibility of considerable gains
someone who dives (into water)