water pipe vs hubbly-bubbly

water pipe and hubbly-bubbly both are nouns.

Word	Noun	Adjective	Verb	Adverb
water pipe	Yes	No	No	No
hubbly-bubbly	Yes	No	No	No

As nouns, water pipe and hubbly-bubbly are synonyms defined as:

water pipe and hubbly-bubbly: an oriental tobacco pipe with a long flexible tube connected to a container where the smoke is cooled by passing through water

Other synonyms of water pipe include calean, chicha, hookah, hubble-bubble, kalian, narghile, nargileh, sheesha, shisha.

water pipe (noun)	hubbly-bubbly (noun)
an oriental tobacco pipe with a long flexible tube connected to a container where the smoke is cooled by passing through water	an oriental tobacco pipe with a long flexible tube connected to a container where the smoke is cooled by passing through water