hubbly-bubbly vs hubble-bubble

hubbly-bubbly and hubble-bubble both are nouns.

Word	Noun	Adjective	Verb	Adverb
hubbly-bubbly	Yes	No	No	No
hubble-bubble	Yes	No	No	No

As nouns, hubbly-bubbly and hubble-bubble are synonyms defined as:

hubbly-bubbly and hubble-bubble: 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 hubbly-bubbly include calean, chicha, hookah, kalian, narghile, nargileh, sheesha, shisha, water pipe.

hubbly-bubbly (noun)	hubble-bubble (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