burble vs ripple

burble is not a noun while ripple is a noun.

Word	Noun	Adjective	Verb	Adverb
burble	No	No	Yes	No
ripple	Yes	No	Yes	No

As verbs, burble and ripple are synonyms defined as:

Other synonyms of burble include babble, bubble, guggle, gurgle.

burble (noun)	ripple (noun)
	a small wave on the surface of a liquid
	(electronics) an oscillation of small amplitude imposed on top of a steady value

burble (verb)	ripple (verb)
flow in an irregular current with a bubbling noise	stir up (water) so as to form ripples
	flow in an irregular current with a bubbling noise